FindLaw - Advertising Insertion Order - Stamps.com and America Online Inc.

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                        AOL ADVERTISING INSERTION ORDER
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Contract #: ________________
AOL Salesperson: ___________
                                               Credit Approval Received
Sales Coordinator: _________
Date: ______________________


<TABLE>

<CAPTION>
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                                            Advertiser                  Advertising Agency
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           Contact Person                   Doug Walner
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            Company Name                  Stamps.com, Inc.
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          Address - Line 1            2900 31st St., Suite 150
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          Address - Line 2             Santa Monica, CA 90405
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              Phone #                        310-450-1444
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               Fax #
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               Email                     Dwalner@stamps.com
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             SIC Code
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       Advertiser IAB Category
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</TABLE>


<TABLE>

<CAPTION>
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                                         Billing Information
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Send Invoices to (choose one):               Advertiser                   [_]  Agency
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    Advertiser or Agency Billing            Same as above
          Contact Person
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           Company Name
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       Billing Address - Line 1
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       Billing Address - Line 2
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           Billing Phone #
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            Billing Fax #
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        Billing Email Address
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        P.O. #, if applicable
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</TABLE>

1.   Guaranteed Payments. Advertiser shall make the following payments to AOL:
 
    a.  [***]* upon execution of this Insertion Order Agreement,
    b.  [***]* on each of (i) January 1,1999 and (ii) February 1, 1999;
    c.  [***]* on March 1, 1999; and
    d.  Subject to the provisions of Section 2 of Exhibit A, [***]* on each of
        (i) May 1, 1999, (ii) August 1, 1999, (iii) November 1, 1999, and (iv)
        February 1, 2000; provided however, should the Phase II Promotions
        commence prior to or after May 1, 1999, Advertiser shall pay AOL [***]*
        on the commencement date of the Phase II Promotions (the "Phase II
        Promotion Launch Date"), and [***]* on each of the four (4) month, seven
        (7) month, and ten (10) month anniversaries of the Phase II Promotion
        Launch Date.

2.   Additional Payments. See Sections 3 and 8 of Exhibit A, and Section 9 of
     Exhibit E attached hereto.
 
3.   Late Payments; Wired Payments. All amounts owed hereunder not paid when due
     -----------------------------
     and payable will bear interest from the date such amounts are due and
     payable at the prime rate in effect at such time. All payments required
     hereunder will be paid in immediately available, non-refundable U.S. funds
     wired to the "America Online" account, Account Number 323070752 at The
     Chase Manhattan Bank, 1 Chase Manhattan Plaza, New York, NY 10081 (ABA:
     021000021). In the event of nonpayment on any of the dates specified above,
     Advertiser shall have an additional five (5) business days within which to
     make such payment and if Advertiser does not make the required payment in
     such additional five (5) business days, AOL reserves the right to
     immediately terminate this Insertion Order Agreement with written notice to
     Advertiser.
--------------------------------------------------------------------------------

* [***]  Confidential treatment has been requested for the bracketed portions.
The confidential redacted portion has been omitted and filed separately with the
Securities and Exchange Commission.


<TABLE> 
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 Inventory Type(choose one):             [_] AOL Service only      [_] AOL Affiliate only (e.g AOL.com)
[_] Aol Service & AOL Affiliate
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</TABLE> 

                                       1

<PAGE>
 

<TABLE> 

<CAPTION> 
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                                                          AOL Service
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----------------------------------------------------------------------------------------------------------------------------------
AOL Inventory/Demographic*          Display           Display                    # of Ad Slots       Total Gross         Total
        Purchased                  Start Date          Stop        Ad Type         Purchased            Price         Impressions
                                                       Date 
----------------------------------------------------------------------------------------------------------------------------------
      
<C>                 
<C>              
<C>
    PHASE I PROMOTIONS
----------------------------------------------------------------------------------------------------------------------------------  
Run of E-mail: Zip Code Area 1        [***]*           [***]*        Banner                             [***]*           [***]*
                                                                    Rotation
----------------------------------------------------------------------------------------------------------------------------------
Run of E-mail: Zip Code Area 2        [***]*           [***]*        Banner                             [***]*           [***]*
                                                                    Rotation
----------------------------------------------------------------------------------------------------------------------------------  
Run of E-mail: Zip Code Area 3        [***]*           [***]*        Banner                             [***]*           [***]*
                                                                    Rotation
----------------------------------------------------------------------------------------------------------------------------------  
Run of Service: Zip Code Area 1       [***]*           [***]*        Banner                             [***]*           [***]*
                                                                    Rotation
----------------------------------------------------------------------------------------------------------------------------------  
Run of Service: Zip Code Area 2       [***]*           [***]*        Banner                             [***]*           [***]*
                                                                    Rotation
----------------------------------------------------------------------------------------------------------------------------------  
Run of Service: Zip Code Area 3       [***]*           [***]*        Banner                             [***]*           [***]*
                                                                    Rotation
----------------------------------------------------------------------------------------------------------------------------------  
Computing Download Software: Zip      [***]*           [***]*        Banner                             [***]*           [***]*
        Code Targeted                                               Rotation
----------------------------------------------------------------------------------------------------------------------------------
----------------------------------------------------------------------------------------------------------------------------------  
    PHASE II PROMOTIONS               [***]*           [***]*
See Exhibit B attached hereto
----------------------------------------------------------------------------------------------------------------------------------  
----------------------------------------------------------------------------------------------------------------------------------  
* Attach completed AOL Demographic                                                    PHASE I          $193,000          [***]*
       Profile Worksheet                                                         PROMOTIONS TOTAL:
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            All necessary artwork and active URL's must be provided by advertiser 3 business days prior to start date.
 
                                          Artwork required from Advertiser/Agency:
                                          ----------------------------------------

[_] 234x60  IAB Standard /10k Max                 [_] 145x30 Old Standard /10k Max                 [_] 120x60 Shopping/10k Max
[_] 175x45 Chat/Mail in-box/10k Max               [_] 197x40 PF Area/10k Max                       [_] Special_____
                                                   *  Static banners only, no animation*
 
Linking URL: The HTTP/URL address to be connected to the Advertisement shall be:  http://www.stamps.com, or any other HTTP/URL 
agreed upon by Advertiser and AOL (the "Affiliated Advertiser Site").  Advertiser shall be responsible for any hosting or 
communication costs associated with the Affiliated Advertiser Site.
 
                                         Please send artwork and URL to (choose one):
 
                               [_] AOLARTWEST@aol.com                        [_] AOLARTEAST@aol.com
                                   ------------------                            ------------------

AOL reserves the right to immediately cancel any advertising flight in the event of a material change to the nature or content of 
                                                the site linked to the Advertisement.
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</TABLE>

* [***]  Confidential treatment has been requested for the bracketed portions.
The confidential redacted portion has been omitted and filed separately with the
Securities and Exchange Commission.

                                       2

<PAGE>
 

<TABLE>

<CAPTION>
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                                                               AOL Affiliate (e.g., AOL.com)
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     AOL Affiliate                     Display        Display                     # of Ad Slots      Total Gross       Total   
 Inventory/Demographic*                 Start          Stop          Ad Type        Purchased           Price       Impressions
       Purchased                        Date           Date                                                                     
---------------------------------------------------------------------------------------------------------------------------------- 
PHASE I PROMOTIONS
----------------------------------------------------------------------------------------------------------------------------------  
Digital City - Market Selection         [***]*         [***]*         Banner                             [***]*        [***]*
                                                                     Rotation
---------------------------------------------------------------------------------------------------------------------------------- 
     PHASE II PROMOTIONS                [***]*         [***]*
See Exhibit B attached hereto
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                                                                                  ------------------------------------------------ 
* See attached package description for                                                    PHASE I         $7,000       [***]*
     any AOL.com package purchases                                                      PROMOTIONS
                                                                                           TOTAL :
---------------------------------------------------------------------------------------------------------------------------------- 
---------------------------------------------------------------------------------------------------------------------------------- 
            All necessary artwork and active URL's must be provided by advertiser 3 business days prior to start date.
 
                                            Artwork required from Advertiser/Agency :
                                            -----------------------------------------

 [_] 468x60 NF Reviews, Search Terms, My News & Hometown/10k Max/animation OK
 [_] 100x70 AOL.com Home Page/3k Max/No animation                     [_] 120x60 NF Home Page/2k Max/No animation 
 [_] 120x60 Shopping/4k Max/No animation                              [_] 234x60 NF Kids Only & Hometown/5k Max/animation OK
 [_] 120x60 Instant Messenger/7.5k Max/animation OK
 
 Linking URL:  The HTTP/URL address to be connected to the Advertisement shall be the same address as that of the Advertiser Site.
 
                                           Please send artwork and URL to (choose one):
 
                              [_] AOLWEBWEST@aol.com                        [_] AOLWEBEAST@aol.com
                                  ------------------                            ------------------

AOL reserves the right to immediately cancel any advertising flight in the event of a material change to the nature or content of 
                                             the site linked to the Advertisement.
----------------------------------------------------------------------------------------------------------------------------------

</TABLE>


<TABLE>

<CAPTION>
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                          Advertising Purchase Summary
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                            Total Price          Total Impressions       CPM
--------------------------------------------------------------------------------
       AOL Networks              [***]*                 [***]*
--------------------------------------------------------------------------------
      AOL Affiliate              [***]*                 [***]*
--------------------------------------------------------------------------------
   Total Purchase Price          [***]*                 [***]*           [***]*
--------------------------------------------------------------------------------
  (Less Agency Discount)          N/A                    N/A
--------------------------------------------------------------------------------

</TABLE> 
 

<TABLE> 

<CAPTION> 
                       ---------------------------------------------------------
                         Net Purchase Price      Total Impressions
                       ---------------------------------------------------------
                       
<S>                       
<C> 
                              $1,900,350               [***]*
                       ---------------------------------------------------------

</TABLE>

The products and/or services to be offered or promoted by Advertiser in the
Advertisements are as follows: online postal services (i.e., services associated
with the online sale of postage stamps and ancillary products and services
related thereto) (the "Advertiser Products").



* [***]  Confidential treatment has been requested for the bracketed portions.
The confidential redacted portion has been omitted and filed separately with the
Securities and Exchange Commission.

                                       3

<PAGE>
 
4.   Impressions Commitment.  Any guarantees are to impressions (as measured by
     ----------------------
     AOL in accordance with its standard methodologies and protocols), not
     "click-throughs." In the event there is (or will be in AOL's reasonable
     judgment) a shortfall in impressions as of the end of a display period (a
     "Shortfall"), such Shortfall shall not be considered a breach of the
     Agreement by AOL; instead, AOL will provide Advertiser, as its sole remedy,
     with "makegood" impressions through advertisement placements on the AOL
     Service. In connection with the foregoing, AOL shall use reasonable efforts
     to ensure that any makegood impressions shall be provided to Advertiser
     through promotions that are comparable in nature to the appropriate type of
     promotions through which the impressions should have been delivered (e.g.,
     if there is a Shortfall that should have been delivered through Level A
     Promotions, AOL shall use reasonable efforts to make up such impressions
     with other Level A Promotions). In the event that AOL is unable to provide
     makegood impressions through the appropriate comparable promotions, AOL
     shall provide such impressions through other types of promotions as
     follows: (i) for each Level A impression that was not delivered, AOL shall
     deliver either (a) three (3) Level B impressions or (b) ten (10) Level C
     impressions; (ii) for each Level B impression that was not delivered, AOL
     shall deliver either (a) 1/3 of a Level A impression or (b) three (3) Level
     C impressions; and (iii) for each Level C impression that was not
     delivered, AOL shall deliver one Level C impression. To the extent
     impressions commitments are identified without regard to specific
     placements, such placements will be as mutually agreed upon by AOL and
     Advertiser during the course of the display period. AOL reserves the right
     to alter Advertiser flight dates to accommodate trafficking needs or other
     operational needs. In such cases, AOL will make available to Advertiser
     reasonably equivalent flight(s).

5.   Navigation.  Advertiser shall provide continuous navigational ability for
     ----------                                                              
     AOL users to return to an agreed-upon point on the AOL Service (for which
     AOL shall supply the proper address) from the Affiliated Advertiser Site
     (e.g., the point on the AOL Service from which the Affiliated Advertiser
     Site is linked).

6.   Term.  Unless otherwise terminated as provided herein, the term hereof
     ----
     shall begin on the first Display Start Date and shall expire on the last
     Display Stop Date.


AUTHORIZED SIGNATURES

In order to bind the parties to this Insertion Order Agreement, their duly
authorized representatives have signed their names below on the dates indicated.
This Agreement (including Exhibits A, B, C, D and E attached hereto and
incorporated by reference) shall be binding on both parties when signed on
behalf of each party and delivered to the other party (which delivery may be
accomplished by facsimile transmission of the signature pages hereto).
 
AOL                                    ADVERTISER
 
By:  /s/ David M. Colburn              By: /s/ John M. Payne
     ----------------------------          ----------------------------
(signature)                            (signature)
 
Print Name: David M. Colburn           Print Name: John M. Payne
            ---------------------                  --------------------
 
Title:  SVP Business Affairs           Title: Pres/CEO
        ------------------------              -------------------------
(Print or Type)                        (Print or Type)
 
Date:    12/16/98                      Date: 12/15/98
 

                                       4

<PAGE>
 
                                   EXHIBIT A
                                   ---------


1.   Authorization to Conduct Business.  Advertiser hereby represents and
     ---------------------------------                                   
     warrants that it has obtained all necessary permits, licenses or other
     authorizations from the United States Postal Service (the "USPS") which
     permits Advertiser to conduct a beta test of the Advertiser Products by
     advertising and offering for sale the Advertiser Products on the AOL
     Service during the Phase I Promotions.

2.   Phased Roll-Out of Promotions. The Advertisements provided hereunder
     ----------------------------
     shall be provided by AOL in accordance with the Insertion Order provided
     above, subject to the following:

     a.   At least three (3) days prior to the Phase I Promotions Display Stop
          Date, Advertiser shall provide AOL with a written notice which shall
          contain the following :

          i.    a representation by Advertiser that Advertiser has obtained all
                necessary permits, licenses or other authorizations from the
                USPS which permits Advertiser to engage in a full scale rollout
                and sale of the Advertiser Product through the AOL Service (the
                "USPS Authorization"), and

          ii.   an election by Advertiser to receive the Phase II Promotions.
                Provided, however, that if prior to the end of the Phase I
                Promotions Advertiser shall receive USPS Authorization to
                promote and sell the Advertiser Products on a full scale basis
                through the AOL Service, Advertiser shall provide AOL with a
                written notice (provided at least two (2) days prior to the date
                on which Advertiser wishes to begin receiving the Phase II
                Promotions) (the "Acceleration Notice"), containing (A) the
                representation required pursuant to Section 2(a)(i) of this
                Exhibit A, and (B) an election by Advertiser to receive the
                Phase II Promotions. In such event, the parties hereto shall
                create a new insertion order which will indicate the new Display
                Start Date of the Phase II Promotions, which insertion order
                shall be attached hereto as an Exhibit. Notwithstanding the
                foregoing, (1) upon receipt of an Acceleration Notice, AOL shall
                only be obligated to place Advertisements for which Advertiser
                has already provided the necessary creative art work and related
                materials to AOL, and which requires less than two (2) days of
                advance notice to place on the AOL Service; to the extent that
                any Advertisement required to be placed during the Phase II
                Promotions shall require more than two (2) days of advance
                notice to be placed on the AOL Service, AOL shall provide such
                Advertisements within thirty (30) days after receipt of the
                Acceleration Notice; (2) AOL shall not be obligated to provide
                the Phase II Promotions unless and until Advertiser makes the
                representation required pursuant to Section 2(a)(i) of this
                Exhibit A; and (3) if Advertiser does not receive the USPS
                Authorization prior to June 30, 1999, notwithstanding anything
                otherwise contained herein, either party shall have the right to
                immediately terminate this Insertion Order Agreement without any
                further obligation or liability of any kind (other than any
                liability incurred by either party prior to such date) to the
                other party on account of such termination. In the event of such
                termination, Advertiser shall have no further payment
                obligations under this Insertion Order Agreement other than
                payment obligations due and payable at the time of termination.

3.   Additional Promotions.
     --------------------- 

     a.    Phase I. During the Phase I Promotions, from time to time, Advertiser
           -------
           shall have the right to purchase up to [***]* worth of additional
                                                   ---
           from AOL subject to the following restrictions:
           
           i    Advertiser shall purchase such additional impressions in minimum
                increments of [***]* at a CPM value that is equivalent to the
                               ---- 
                CPM value of comparable types of provided hereunder, pursuant to
                an AOL Insertion Order Agreement entered into by Advertiser and
                AOL (an "Insertion Order") which will be attached hereto as an
                exhibit,

           ii.  Advertiser shall submit the relevant Insertion Order to AOL at
                least five (5) days prior to the date on which Advertiser wishes
                to begin receiving impressions; and

           iii. AOL's obligation to deliver any additional impressions pursuant
                to this Section 3 shall be subject to the availability of
                advertising inventory on the AOL Service from which AOL can
                deliver such additional impressions.

     b.    Phase II.  During the Phase II Promotions, from time to time,
           --------                                                    
           Advertiser shall have the right to purchase up to [***]* worth of
                                                              ---   
           additional impressions from AOL subject to the restrictions contained
           in Section 3(a)(i), (ii) and (iii). Notwithstanding the foregoing, in
           the event that the transaction between AOL and Advertiser which is
           contemplated under Section 9 hereof is not consummated, or if
           Advertiser expends less than the amounts earmarked for such
           transactions, Advertiser will use the funds earmarked for such
           transaction (or any remaining portion thereof) to purchase up to
           [***]* of additional impressions from AOL subject to the provisions
            ---
           Section 3(a)(i), (ii) and (iii).

     *[***]Confidential treatment has been requested for the bracketed
            portions.  The confidential redacted portion has been omitted and
            filed separately with the Securities and Exchange Commission.

                                       5

<PAGE>
 
4.   Product Parity.  Advertiser will ensure that the prices, terms and
     --------------                                                    
     conditions for the Advertiser Products in the Affiliated Advertiser Site
     are no less favorable than the prices, terms and conditions on which the
     Advertiser Products or substantially similar products are offered by or on
     behalf of Advertiser through any other distribution channels.

5.   Special Offers/Member Benefits. Advertiser will generally promote through
     ------------------------------                                           
     the Affiliated Advertiser Site any special or promotional offers made
     available by or on behalf of Advertiser through any other distribution
     channels directed primarily at a consumer audience (i.e., non-corporate
     customers). Advertiser shall not be required to comply with the foregoing
     provision if compliance therewith would result in a breach by Advertiser of
     any contractual arrangements with third parties, and it is understood by
     the parties that the foregoing shall not prevent Advertiser from providing
     one time special offers which may not be appropriate for AOL users. In
     addition, Advertiser shall promote (a) at least four (4) special offers on
     the Affiliated Advertiser Site that are exclusively available to AOL users
     (the "AOL Special Offers") and (b) at least one special offer in connection
     with the Stamp Days Promotions described in Section 10 hereof (the "Stamp
     Days Promotion Special Offer"). AOL Special Offers made available by
     Advertiser shall provide a substantial benefit to AOL users as reasonably
     determined by Advertiser, either by virtue of a meaningful price discount,
     product enhancement, unique service benefit or other special feature.
     Advertiser shall have the right to promote special or promotional offers to
     AOL users which in addition to the promotion of Advertiser, may promote
     other third parties; provided that, (i) such third parties cannot be
     entities that are reasonably construed to be competitive with AOL, (ii) AOL
     shall have the right to review and approve such third parties prior to the
     placement of such special or promotional offers, and (iii) such special or
     promotional offers shall link only to the Affiliated Advertiser Site
     (unless otherwise agreed upon by the parties) and shall represent no more
     than ten percent (10%) of the special or promotional offers offered
     hereunder. Advertiser will provide AOL with reasonable prior notice of the
     AOL Special Offers and the Stamp Days Promotion Special Offer so that AOL
     can market the availability of such special offers in the manner AOL deems
     appropriate in its editorial discretion.

6.   Advertiser Promotion of AOL.  Subject to Advertiser's existing contractual
     ---------------------------                                               
     arrangements, within Advertiser's web sites on the World Wide Web portion
     of the Internet that are not co-branded with a third party (each an
     "Advertiser Web Site"), at AOL's option, Advertiser shall include one of
     the following (each an "AOL Promo"): (i) a prominent promotional banner or
     button having a size, prominence and placement location as mutually agreed
     upon by the parties (but in no event shall such button have a size,
     prominence or placement location that is less favorable, in any respect,
     than the size, prominence or placement location provided to any other third
     party) to promote such AOL products or services as AOL may designate (for
     example, the America Online brand service, the CompuServe brand service,
     the AOL.com site, any of the Digital City services or the AOL Instant
     Messenger service); or (ii) a prominent "Try AOL" feature having a size,
     prominence and placement location as mutually agreed upon by the parties
     (but in no event shall such button have a size, prominence or placement
     location that is less favorable, in any respect, than the size, prominence
     or placement location provided to any other third party) through which
     users can obtain promotional information about AOL products or services
     designated by AOL and, at AOL's option, download or order the then-current
     version of client software for such AOL products or services. AOL will
     provide the creative content to be used in the AOL Promo (including
     designation of links from such content to other content pages). To the
     extent Advertiser notifies AOL of reasonable complaints or concerns
     regarding the AOL Promo or any other content or materials linked thereto or
     associated therewith ("Objectionable AOL Content"), AOL will, to the extent
     such Objectionable AOL Content is within AOL's control, use commercially
     reasonable efforts to respond in good faith to such complaints or concerns.
     Advertiser shall use reasonable efforts to post (or update, as the case may
     be) the creative content supplied by AOL within the spaces for the AOL
     Promos within five days of its receipt of such content from AOL. In the
     event that AOL elects to serve the AOL Promos to the Advertiser Web Site
     from an ad server controlled by AOL or its agent, Advertiser shall take all
     reasonable operational steps necessary to facilitate such ad serving
     arrangement including, without limitation, inserting HTML code designated
     by AOL on the pages of the Advertiser Web Site on which the AOL Promos will
     appear. In addition, in Advertiser's television, radio, print and "out of
     home" (e.g., buses and billboards) advertisements and in any publications,
     programs, features or other forms of media over which Advertiser exercises
     at least partial editorial control, Advertiser will include specific
     references or mentions (verbally where possible) of the availability of the
     Affiliated Advertiser Site through the AOL Service, which are at least as
     prominent as any references that Advertiser makes to any Advertiser Web
     Site (by way of site name, related company name, URL or otherwise). Without
     limiting the generality of the foregoing, (i) Advertiser's listing of the
     "URL" for any Advertiser Web Site will be accompanied by an equally
     prominent listing of the "keyword" term on AOL for the Affiliated
     Advertiser Site (if any) and (ii), Advertiser shall use commercially
     reasonable efforts to promote any special offers offered on the AOL Service
     through its offline promotional efforts (e.g., cable and or television
     advertising buys). In connection with the foregoing, AOL will pay
     Advertiser AOL's then current standard bounty fee for any new subscribers
     to the AOL Service who subscribe to the AOL Service through the AOL Promo.

7.   Functionality of Advertiser Product.  In the event that any Advertiser
     ------------------------------------                                  
     Products (or any software associated therewith) that are promoted and sold
     through the Advertisements result in a poor user experience for a
     significant number of AOL users (e.g., poor user interface, incompatible
     software, unusable software, software which contain bugs or viruses which
     substantially reduces the usability of the Advertiser Product, or software
     which does not perform the functions for which it is advertised), and
     provided that Advertiser does not remedy such poor user experience within
     fifteen (15) days (or thirty (30) days in the event that such poor user
     experience is directly attributable to the USPS) after written notice from
     AOL (during which fifteen (15) day or thirty (30) day period AOL shall have
     the right to decrease or cease the placement of the Advertisements, and in
     such event, AOL will be relieved of the proportionate amount of any
     Advertisement placement commitments made to Advertiser by AOL hereunder
     corresponding to such decrease in placements), AOL shall have the right to
     terminate this Insertion Order Agreement upon thirty (30) days written
     notice to Advertiser. In the event of such termination, Advertiser shall
     have no further payment obligations under this Insertion Order Agreement
     other than payment obligations due and payable at the time of termination.

                                       6

<PAGE>
 
8.   Distribution of Advertiser Software with AOL Store Fulfillment Packages.
     -----------------------------------------------------------------------  
     AOL will facilitate the distribution of the software developed by
     Advertiser which is necessary for the operation of Advertiser's electronic
     stamp product and enables end-users to purchase postal services
     electronically through Advertiser's network (the "Advertiser Software")
     through a third party package fulfillment distributor (the "Distributor")
     in accordance with the terms and conditions of the agreement attached
     hereto as Exhibit D. Advertiser will pay the Distributor up to a maximum
     amount of [***]* (the "Set-Aside Payment") in consideration for the
                ---
     distribution of the Advertiser Software. In the event that Advertiser shall
     not have used the entire Set-Aside Payment in connection with the
     distribution of the Advertiser Product by December 1, 1999, Advertiser will
     use the remaining portion of the Set-Aside Payment to purchase additional
     impressions on the AOL Service, subject to the restrictions provided in
     Section 3(a)(i), (ii) and (iii) hereof.

9.   Distribution of Advertiser Software with AOL 4.0 CD-ROMS. AOL will
     --------------------------------------------------------          
     distribute the Advertiser Software of Advertiser in accordance with the
     provisions of Exhibit E attached hereto.

10.  Stamp Days Promotion/Rainman Production.  With respect to the Special
     ---------------------------------------                              
     Campaign Promotion: Stamp/Postage Days listed on Exhibit B (each a "Stamp
     Day Promotion" and collectively "Stamp Day Promotions"), AOL will work with
     Advertiser to create various editorial and programming content related to
     the Advertiser Products. AOL shall be responsible for the creation of a
     rainman area (the "Stamp Rainman Area") on the AOL Service to promote Stamp
     Days. Advertiser shall be responsible for providing AOL with content and
     promotions to be promoted by AOL during Stamp Days. At Advertiser's option,
     the Stamp Days promotion may occur over a period of three (3) contiguous
     days or three (3) separate and unrelated days and Advertiser shall provide
     AOL with no less than forty five (45) days notice prior to the time that
     Advertiser wishes to receive the Stamp Days promotion or a Stamp Day
     promotion. In addition to the Stamp Rainman Area, AOL will program and
     create at least one other rainman area for Advertiser which will contain
     such content and promotions as mutually agreed upon by the parties hereto
     (the "Additional Rainman Area" and together with the Stamp Rainman Area the
     "Rainman Areas"). AOL will incur the expense of creating the Rainman Areas
     up to a maximum expenditure of [***]*. If the costs associated with the
                                     ---
     Rainman Areas exceed [***]*, Advertiser shall be responsible for such
                           ---     
     excess amounts.

11.  Keyword: Stamps. AOL will create a "referee" screen in the appropriate
     --------------- 
     areas of the AOL Service to which Keyword Stamp or Stamps will link. Such
     "referee" screen will contain programming created by AOL in its sole
     discretion, provided that, AOL shall provide Advertiser with a button or
     link on such screen which will link to the Advertiser Site or any other
     area agreed upon by the parties and Advertiser shall be the only provider
     of online postal services (except for specialty or collectible non-
     electronically issued postage stamp providers) to be provided with a button
     or link on such "referee" screen. In addition to the foregoing, subject to
     the provisions hereof, Advertiser shall have the right to use the AOL
     Keyword Term Stamps.com and one additional AOL Keyword Term as mutually
     agreed upon by the parties.




* [***]  Confidential treatment has been requested for the bracketed portions.
The confidential redacted portion has been omitted and filed separately with the
Securities and Exchange Commission.

                                       7

<PAGE>
 
                                   EXHIBIT B
                                   ---------
                                        
                              PHASE II PROMOTIONS


<TABLE>

<CAPTION>
---------------------------------------------------------------------------------------------------------------
                                          Impressions       Percent of        Average CPM         Total Cost
                                                             Carriage
---------------------------------------------------------------------------------------------------------------
                                       
<C>               
<C>               
<C>               
<C>        
Level A -- Highly Targeted                   [***]*           [***]*             [***]*             [***]*
Level B - Targeted                           [***]*           [***]*             [***]*             [***]*
Level C -- Relevant Broad Reach              [***]*           [***]*             [***]*             [***]*
Campaign Promotion: Stamp Days               [***]*           [***]*             [***]*             [***]*
---------------------------------------------------------------------------------------------------------------
Total Campaign                               [***]*           [***]*             [***]*         $1,700,350
---------------------------------------------------------------------------------------------------------------

</TABLE> 
 
               Level A Promotions                        Type of 
               ------------------                        -------
                                                         Promotion   
                                                         ---------
                                                                               
                      AOL Network
     Workplace Business Services:                        Permanent 
                 Postage Category                        placement (top 
                                                         listing in  such area
                                                         for so long 
                                                         as such area
                                                         retains its current
                                                         design)-
           Workplace Professions:                        Sponsorship
                    Admin/Support                        treatment
      Workplace Professions: Home                        Sponsorship
                         Business                        treatment
Workplace Professions: MultiLevel                        Sponsorship
                        Marketing                        treatment
   Workplace Newsletter: Specials                        Feature link
                          Section                        integration
      Computing Download Software                        Banner rotation
     Computing Download Software:                        Sponsorship & 
                 Business/Finance                        list box*
 
      Shopping: Computer Software                        Tenant position
   Shopping: Mother's Day Holiday                        Slideshow
                          Catalog                        integration
   Shopping: Father's Day Holiday                        Slideshow
                          Catalog                        integration
  Shopping: Gift Reminder Service                        Feature link
                         14 day**                        integration
    Personal Finance: Tax Special                        Sponsorship   
                                                         (banner only)
     Personal Finance: Tax Area**                        Banner rotation
          Mail Center Main Screen                        Banner rotation
          Classifieds: Employment                        Banner rotation
 
                          AOL.com
          AOL.com Search Terms***
 
                       CompuServe
                       ----------
Mindset Package: Business                                Banner rotation
Professional/News
Mindset Package: Home & Family                           Banner rotation


* [***]  Confidential treatment has been requested for the bracketed portions.
The confidential redacted portion has been omitted and filed separately with the
Securities and Exchange Commission.

                                       8

<PAGE>
 
                  Level B Areas
                  -------------
 
                        AOL.com                                  
 AOL.COM or NetFind Home Page/s                               Banner rotation
                          slots
      My News - Run of Top News                               Banner rotation
 My News - Run of Business News                               Banner rotation
 
                   Digital City
 Digital City: Market Selection                               Banner rotation
 
                  Level C Areas
                  -------------
 
                    AOL Network
                          Email                               Banner rotation
                           News                               Banner rotation
     AOL Network Run of Service                               Banner rotation
 
                        AOL.com
                            AIM                               Banner rotation
 
    Special Campaign Promotion:
    ---------------------------
     Stamp/Postage Days  (3-day 
     -------------------------- 
                     promotion)
                     ----------
                          Email
                           News
                    AOL Network
Remnant and Promotional Support
                       Vehicles
 
 -----------------------------------------------------------------------
*Subject to Advertiser's compliance with all technical and programming
 requirements (including quality assurance testing) of AOL.
**Advertiser will only be provided with these Promotions if the Phase
 II Promotions shall have begun prior to April 15, 1999.
*** List to include: mail, mailing, post, postal, postage, stamp, stamps
------------------------------------------------------------------------

                                       9

<PAGE>
 
                                   EXHIBIT C
                                   ---------

                 AOL Advertising Standard Terms and Conditions
                 ---------------------------------------------

1.   Advertising Material/Display.  Advertiser acknowledges that the sole
     ----------------------------                                        
     obligation of America Online, Inc. ("AOL") is to display an advertisement
     or icon (the "Advertisement") from Advertiser which conforms to the
     specifications set forth in the applicable Insertion Order Agreement which
     has been executed by AOL and Advertiser (the "Insertion Order," and,
     collectively with these Standard Terms and Conditions, the "Insertion Order
     Agreement") through the standard narrowband U.S.-based America Online brand
     service (excluding any sub-products, sub-services or third party areas
     which may be offered therein) or such other U.S.-based AOL property as may
     be expressly described as the site for placement in the Insertion Order
     (the "AOL Service"). Subject to Advertiser's reasonable approval, AOL will
     have the right to fulfill its promotional commitments with respect to the
     Advertisements by providing Advertiser with comparable placements of the
     Advertisements in alternative areas of the AOL Service. AOL reserves the
     right to redesign or modify the organization, structure, "look and feel"
     and other elements of the AOL Service (including any redesign of the
     Workplace Business Services: Postage Category) at its sole discretion at
     any time without prior notice (a "Redesign"). In the event such
     modifications will materially and adversely affect the placement of the
     Advertisement, AOL will work with Advertiser to display the Advertisement
     in a comparable location and manner that is reasonably satisfactory to
     Advertiser. Except as expressly provided in the Insertion Order, the
     specific nature and positioning of the Advertisement will be as determined
     by AOL in its editorial discretion. Advertiser agrees that AOL has the
     right to market, display, perform, transmit and promote the Advertisement
     through the AOL Service and in connection therewith, subject to the terms
     and conditions hereof, Advertiser hereby grants to AOL a non-exclusive, 
     non-sublicensable (except to an Affiliate of AOL) and non-transferable
     license to use the names specified by Advertiser from time to time which
     Advertiser shall have a legal right to use (the "Advertiser Marks") in the
     Advertisements and in connection with the advertising, marketing and
     promotion of the Advertiser Products on the AOL Service. Additionally, AOL
     shall have the right to use the Advertiser Marks in connection with the
     distribution of the Advertiser Software in accordance with Exhibit E. AOL
     hereby acknowledges and agrees that (i) except as set forth herein, AOL has
     no rights, title or interest in or to the Advertiser Marks, (ii) AOL shall
     not challenge Advertiser's exclusive rights in and to the Advertiser Marks,
     (iii) AOL shall not apply for registration of the Advertiser Marks anywhere
     in the world, (iv) AOL shall not alter any of the Advertiser Marks in any
     way and shall use the Advertiser Marks exactly as provided by Advertiser,
     (v) the use by AOL of the Advertiser Marks shall inure to the benefit of
     Advertiser with respect to Advertiser's rights and ownership in and to the
     Advertiser Marks, and (vi) Advertiser reserves all rights not expressly
     granted to AOL hereunder in connection with the Advertiser Marks. AOL shall
     use reasonable efforts to notify Advertiser promptly of any infringement of
     any copyrights, trademarks, or other intellectual property or proprietary
     rights relating to the Advertiser Software of which AOL is aware.
     Advertiser may, in its sole discretion, take or not take whatever action it
     believes is appropriate in connection with any such infringement. In the
     event that AOL intends to use an Advertiser Mark in a manner which was not
     previously approved by Advertiser, AOL shall provide notice to Advertiser
     of its intended use of such Advertiser Mark, Advertiser shall then have
     three (3) business days to respond to AOL's proposed use of such Advertiser
     Mark, and if Advertiser does not respond in such three (3) day period,
     AOL's use of such Advertiser Mark shall be deemed approved. Additionally,
     Advertiser agrees that users of the AOL Service have the right to access
     and use the Advertisement together with any content or materials linked to
     the Advertisement (the "Advertiser Content"). The Advertiser Content (a)
     shall not offer or promote any other products and/or services other than
     those expressly provided for in the relevant Insertion Order, (b) will link
     only to the site specified on the Insertion Order and (c) shall not (1)
     disparage AOL; (2) promote any product or service which is reasonably
     competitive with one or more of the principal products or services offered
     through AOL's products and services (other than the Advertiser Products)
     ("Competitive Products") on any page of the Affiliated Advertiser Site
     which is directly linked to the AOL Service; (3) be in contravention of
     AOL's generally applicable advertising standards and practices, as such may
     be modified by AOL from time to time; or (d) violate any applicable law,
     regulation or third party right (including, without limitation, any
     copyright, trademark, patent or other proprietary right). Additionally,
     Advertiser shall consistently update the Advertiser Content and will
     review, delete, edit, create, update and otherwise manage such content in
     accordance with the terms of this Insertion Order Agreement. In no event
     shall the Advertisement or the linked area state or imply that (i) the
     Advertisement was placed by AOL or (ii) that AOL endorses Advertiser's
     products or services. To the extent AOL notifies Advertiser of reasonable
     complaints or concerns (e.g., from an AOL member) regarding the Advertiser
     Content or any other content or materials linked thereto or associated
     therewith ("Objectionable Content"), Advertiser will, to the extent such
     Objectionable Content is within Advertiser's control, use commercially
     reasonable efforts to respond in good faith to such complaints or concerns.
     AOL may alter or shorten the flight dates set forth in the Insertion Order
     if advertising materials required per the Insertion Order are not provided
     in a timely manner, and Advertiser shall not be entitled to any refund or
     proration for delays caused by Advertiser's failure to deliver such
     materials.

2.   Operations.  Unless expressly provided for elsewhere in this Insertion 
     ----------
     Order Agreement, AOL will have no obligation to provide any creative,
     design, technical or production services to Advertiser ("Services").
     Delivery by AOL of any such Services shall be subject to (i) AOL's
     availability to perform the requested work, (ii) execution by both parties
     of a separate work order specifically outlining the Services to be provided
     and the fees to be paid by Advertiser for such Services and (iii) payment
     in advance by Advertiser of such fees. Advertiser will ensure that the
     Advertiser Content and the site linked to the Advertiser Content are in
     compliance with AOL's then-current, generally applicable technical
     standards and will take all reasonable steps necessary to conform the
     Advertiser Content to the then-existing technologies identified by AOL
     which are optimized for the AOL Service (including, without limitation, any
     "quick checkout" tool which AOL may implement to facilitate purchase of
     products by AOL users). In the event that the Advertiser Content or the
     site linked to the Advertiser Content fails to comply with AOL's generally
     applicable technical standards, AOL shall have the right to cease or
     decrease the placement of the Advertisements, and if Advertiser is unable
     to cure such non-compliance within five business days after notice from
     AOL, AOL shall have the right to terminate this Insertion Order Agreement.
     Additionally, AOL will be entitled to discontinue links to Advertiser
     Content to the extent such Advertiser Content will, in AOL's good faith
     judgment, adversely affect the operations of the AOL Service. Advertiser
     will bear full responsibility for all customer service, including without
     limitation, order processing, billing, fulfillment, shipment, collection
     and other customer support associated with any products or services
     offered, sold or licensed through Advertiser's site, and AOL will have no
     obligations whatsoever with respect thereto. Advertiser will take all steps
     necessary to ensure that any contest, sweepstakes or similar promotion
     conducted or promoted through the Advertiser Content complies with all
     applicable federal, state and local laws and regulations.

3.   Search Terms/Keywords.  To the extent Advertiser is purchasing an
     ----------------------                                           
     Advertisement related to an Internet-based "search" term, Advertiser
     represents and warrants that Advertiser has the legal rights necessary to
     utilize such search term in connection with the Advertisement. Any
     "keyword" terms for navigation from within the proprietary America Online
     brand service ("AOL Keyword Terms") (as contrasted to Internet-based search
     terms) which may be made available to Advertiser shall be (i) subject to
     availability and (ii) limited to the combination of the keyword modifier
     combined with a 

                                       10

<PAGE>
 
     registered trademark of Advertiser. AOL reserves the right to revoke at any
     time Advertiser's use of any AOL Keyword Terms which do not incorporate
     registered trademarks of Advertiser. Advertiser acknowledges that its
     utilization of any AOL Keyword Term will not create in it, nor will it
     represent it has, any right, title or interest in or to such AOL Keyword
     Term, other than the right, title and interest Advertiser holds in
     Advertiser's registered trademark independent of the AOL Keyword Term.

4.   Payment; Cancellation.  Advertiser agrees to pay AOL for all advertising
     ---------------------                                                   
     displayed in accordance with the agreed upon amounts and billing schedule
     shown on the relevant Insertion Order. Advertising packages are
     nonrefundable or proratable except to the extent otherwise expressly
     contemplated hereunder. Should AOL fail to display the Advertisements in
     accordance with the Insertion Order due to Advertiser's failure to comply
     with any requirement of the Insertion Order or this Insertion Order
     Agreement, Advertiser will remain liable for the full amount indicated on
     the Insertion Order. In the event of a Redesign, if AOL and Advertiser
     cannot reach agreement on a substitute placement, Advertiser shall have the
     right to cancel the Advertisement upon thirty (30) days advance written
     notice to AOL. In such case, Advertiser will only be responsible for the
     pro-rata portion of payments attributable to the period from the
     commencement of the Insertion Order Agreement through the effectiveness of
     such cancellation (the "Pro Rata Payments"). AOL reserves the right to
     cancel and remove at any time any Advertisement in the event that AOL
     reasonably and in good faith believes that further display of the
     Advertisement will expose AOL to liability or other adverse consequences.
     In the event of such a cancellation, Advertiser will only be responsible
     for the Pro-Rata Payments. Advertiser may not resell, trade, exchange,
     barter or broker to any third-party any advertising space which is the
     subject of this Insertion Order Agreement.

5.   Usage Data.  AOL will provide Advertiser with usage information related to
     ----------                                                                
     the Advertisement in substance and form determined by AOL, consistent with
     its then-standard reporting practices. Advertiser may not distribute or
     disclose usage information to any third party without AOL's prior written
     consent. Additionally, AOL will not disclose usage information to a third
     party in a manner which connects Advertiser to such usage information.

6.   Each party acknowledges that Confidential Information may be disclosed to
     the other party during the course of this Insertion Order Agreement. Each
     party agrees that it will take reasonable steps, at least substantially
     equivalent to the steps it takes to protect its own proprietary
     information, during the term of this Insertion Order Agreement, and for a
     period of three years following expiration or termination of this Insertion
     Order Agreement, to prevent the duplication or disclosure of Confidential
     Information of the other party, other than by or to its employees or agents
     who must have access to such Confidential Information to perform such
     party's obligations hereunder, who will each agree to comply with this
     Section 6. Notwithstanding the foregoing, either party may issue a press
     release or other disclosure containing Confidential Information without the
     consent of the other party, to the extent such press release or disclosure
     is required by law, rule, regulation or government or court order. In such
     event, the disclosing party will provide at least five (5) business days
     prior written notice of such proposed disclosure to the other party.
     Further, in the event such disclosure is required of either party under the
     laws, rules or regulations of the Securities and Exchange Commission or any
     other applicable governing body, such party will (i) redact mutually
     agreed-upon portions of this Insertion Order Agreement to the fullest
     extent permitted under applicable laws, rules and regulations and (ii)
     submit a request to such governing body that such portions and other
     provisions of this Insertion Order Agreement receive confidential treatment
     under the laws, rules and regulations of the Securities and Exchange
     Commission or otherwise be held in the strictest confidence to the fullest
     extent permitted under the laws, rules or regulations of any other
     applicable governing body. For the purposes hereof, "Confidential
     Information" shall mean any information relating to or disclosed in the
     course of the Insertion Order Agreement, which is or should be reasonably
     understood to be confidential or proprietary to the disclosing party,
     including, but not limited to, the material terms of this Insertion Order
     Agreement, information about AOL users, technical processes and formulas,
     source codes, product designs, sales, cost and other unpublished financial
     information, product and business plans, projections, and marketing data.
     "Confidential Information" will not include information (a) already
     lawfully known to the receiving party and which the receiving party has a
     reasonable basis to believe it may use or disclose without restriction, (b)
     independently developed by the receiving party, (c) disclosed in published
     materials except as disclosed by the receiving party in breach of this
     Section 6, (d) generally known to the public except as disclosed by the
     receiving party in breach of this Section 6, or (e) lawfully obtained from
     any third party without restriction.

7.   Limitation of Liability; Disclaimer; Indemnification.
     ---------------------------------------------------- 
     (A)  EXCEPT AS PROVIDED IN SECTION 7(C)(I)(A) AND SECTION 7(C)(II)(A)
     BELOW, UNDER NO CIRCUMSTANCES SHALL EITHER PARTY BE LIABLE TO THE OTHER
     PARTY FOR INDIRECT, INCIDENTAL, CONSEQUENTIAL, SPECIAL OR EXEMPLARY DAMAGES
     (EVEN IF SUCH PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES),
     ARISING FROM ANY ASPECT OF THE ADVERTISING RELATIONSHIP PROVIDED FOR
     HEREIN. EXCEPT AS PROVIDED IN SECTION 7(C) LIABILITY ARISING UNDER THIS
     INSERTION ORDER AGREEMENT WILL BE LIMITED TO DIRECT, OBJECTIVELY MEASURABLE
     DAMAGES, AND THE MAXIMUM LIABILITY OF ONE PARTY TO THE OTHER PARTY FOR ANY
     CLAIMS ARISING IN CONNECTION WITH THIS INSERTION ORDER AGREEMENT WILL NOT
     EXCEED THE AGGREGATE AMOUNT TO BE PAID BY ADVERTISER DURING THE YEAR IN
     WHICH THE LIABILITY ACCRUES.

     (B)(I)(A) AOL MAKES NO AND HEREBY SPECIFICALLY DISCLAIMS ANY
     REPRESENTATIONS OR WARRANTIES, EXPRESS OR IMPLIED, REGARDING THE AOL
     SERVICE OR ANY PORTION THEREOF, INCLUDING ANY IMPLIED WARRANTY OF
     MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE AND IMPLIED WARRANTIES
     ARISING FROM COURSE OF DEALING OR COURSE OF PERFORMANCE; WITHOUT LIMITING
     THE GENERALITY OF THE FOREGOING, AOL SPECIFICALLY DISCLAIMS ANY WARRANTY
     REGARDING (1) THE NUMBER OF PERSONS WHO WILL ACCESS THE ADVERTISER CONTENT
     OR "CLICK-THROUGH" THE ADVERTISEMENTS, (2) ANY BENEFIT ADVERTISER MIGHT
     OBTAIN FROM INCLUDING THE ADVERTISEMENT WITHIN THE AOL SERVICE AND (3) THE
     FUNCTIONALITY, PERFORMANCE OR OPERATION OF THE AOL SERVICE WITH RESPECT TO
     THE ADVERTISEMENTS, AND (B) EXCEPT AS SPECIFICALLY PROVIDED IN CLAUSE II
     BELOW, ADVERTISER MAKES NO AND HEREBY SPECIFICALLY DISCLAIMS ANY OTHER
     WARRANTIES EXPRESS OR IMPLIED INCLUDING, WITHOUT LIMITATION, ANY IMPLIED
     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND
     IMPLIED WARRANTIES ARISING FROM COURSE OF DEALING OR COURSE OF PERFORMANCE.

     (II) Advertiser warrants to AOL that the Advertiser Software will, under
     normal use, conform to the limited warranty contained in the Software
     License Agreement (as defined in Exhibit E) applicable to the Advertiser
     Software during the warranty period set forth in such Software License
     Agreement (the "Warranty Period"). The foregoing warranty will apply only
     to the version of the Advertiser Software distributed by AOL in accordance
     with Exhibit E. If a Customer (as defined in Exhibit E) contacts Advertiser
     during the Warranty Period claiming a breach of the warranty set forth in
     the Software License Agreement provided with the Advertiser Software
     distributed by AOL in accordance with Exhibit E, Advertiser will use
     reasonable efforts to resolve the claim directly with such Customer by
     correcting or replacing such Advertiser Software. If a Customer contacts
     AOL during the Warranty Period claiming any such breach of warranty, AOL
     will use reasonable efforts to promptly refer the matter to Advertiser.

     (C) (i) Advertiser hereby agrees to indemnify, defend and hold harmless AOL
     and the officers, directors, agents, affiliates, 

                                       11

<PAGE>
 
     distributors, franchises and employees of AOL from and against all claims,
     actions, liabilities, losses, expenses, damages and costs (including,
     without limitation, reasonable attorneys' fees) that may at any time be
     incurred by any of them by reason of any claims, suits or proceedings to
     the extent such claims, suits or proceedings arise out of or are related
     to: (a) third party claims (1) for libel, defamation, violation of right of
     privacy or publicity, copyright infringement, trademark infringement or
     other infringement of any third party right, fraud, false advertising,
     misrepresentation, product liability or violation of any law, statute,
     ordinance, rule or regulation throughout the world in connection with the
     Advertisements or Advertiser Content provided by Advertiser to AOL
     hereunder or in connection with the Advertiser Software distributed by AOL
     hereunder (collectively referred to as the "Advertiser Rights Violations");
     provided, however, that Advertiser shall have no such indemnification
     obligation to the extent that any alleged Advertiser Rights Violation
     arises from or in connection with any (x) modification or other alteration
     of any Advertisement or Advertiser Content provided to AOL by Advertiser
     hereunder, without Advertiser's prior approval, (y) (i) use of any
     Advertisement or Advertising Content other than in a manner specified
     hereunder or authorized by Advertiser (ii) claim based upon the combination
     of the Advertisement, the Advertising Content, or the Advertiser Software
     with other content, software technology or materials which Advertiser has
     not approved, or (z) (i) any Advertiser Software that has been modified by
     AOL without the prior consent of Advertiser, (ii) use of the Advertiser
     Software by AOL in a manner which is beyond the scope of the license
     granted to it by Advertiser pursuant to Exhibit E, (iii) AOL's use of the
     Advertiser Software after notice from Advertiser of infringement or
     misappropriation ((i) (ii) and (iii) collectively the "Advertiser Software
     Exceptions"); (2) any material breach by Advertiser of any duty,
     representation or warranty under this Insertion Order Agreement; or (3) any
     contaminated file, virus, worm or Trojan horse originating solely from the
     Advertisements or Advertiser Content, or (4) solely arising out of or in
     connection with the ability of the Advertiser Software distributed by AOL
     hereunder to process calendar date values, including but not limited to,
     calendar date values from January 1, 1999 through or beyond January 1,
     2000, and in processing such calendar values, to operate in accordance with
     the procured system documentation or whether any or all data fields for
     calendar date values and data are four digit fields capable of indicating
     century and millennium or addressing leap years correctly, and (b) any
     contaminated file, virus, worm or Trojan horse originating solely from the
     Advertisements or Advertiser Content.

     (ii) AOL hereby agrees to indemnify, defend and hold harmless Advertiser
     and the officers, directors, agents, affiliates, distributors, franchises
     and employees of Advertiser from and against all claims, actions,
     liabilities, losses, expenses, damages and costs (including, without
     limitation, reasonable attorneys' fees) that may at any time be incurred by
     any of them by reason of any claims, suits or proceedings to the extent
     such claims, suits or proceedings arise out of or are related to: (a) third
     party claims: (1) for libel, defamation, violation of right of privacy or
     publicity, copyright infringement, trademark infringement or other
     infringement of any third party right, fraud, false advertising,
     misrepresentation, product liability or violation of any law, statute,
     ordinance, rule or regulation throughout the world in connection with the
     AOL Promos or content provided by AOL to Advertiser hereunder (collectively
     referred to as the "AOL Rights Violations"); provided, however, that AOL
     shall have no such indemnification obligation to the extent that any
     alleged AOL Rights Violation arises from any (x) modification or other
     alteration of any AOL Promo or AOL Promo content provided to Advertiser by
     AOL, without AOL's prior approval, or (y) (i) use of such AOL Promo or AOL
     Promo content other than in a manner specified hereunder or authorized by
     AOL, or (ii) claim based upon the combination of the AOL Promo or AOL Promo
     content with other content, software technology or materials which AOL has
     not approved; (2) any infringement of any patent or other intellectual
     property right which results from the Advertiser Software Exceptions, (3)
     AOL's grant of a warranty to any Customer which exceeds the limited
     warranty provided by Advertiser above, and (4) any material breach by AOL
     of any duty, representation or warranty under this Insertion Order
     Agreement, and (b) AOL's failure to comply with all applicable laws,
     regulations, authorizations and rules related to the export or re-export of
     any technical data or online postal services.

     (iii) Each party (the "Indemnitee") will promptly notify the other party
     (the "Indemnitor") of any claim, action or demand (an "Action") for which
     indemnity is claimed, permit the Indemnitor to have sole authority to
     defend and/or negotiate a settlement of such Action, with counsel of the
     Indemnitor's choice and reasonably acceptable to the Indemnitee, and
     provide reasonable assistance and cooperation to the Indemnitor in the
     investigation, defense and settlement of such Action at the Indemnitor's
     expense. The Indemnitee shall be entitled to participate fully in the
     defense of any Action at its own expense with counsel of its choice. The
     Indemnitor shall have no obligation for any settlement that the Indemnitor
     does not approve in writing; provided that the Indemnitor shall not,
     without the Indemnitee's prior written consent, enter into any settlement
     or compromise that would impose any obligation upon the Indemnitee, impair
     the rights of the Indemnitee or require the Indemnitee to pay any amount.
     This section will survive the completion, expiration, termination or
     cancellation of this Insertion Order Agreement.

8.   Solicitation.
     ------------ 
     (a) Advertiser will not send unsolicited, commercial e-mail (i.e., "spam")
     through or into AOL's products or services, absent a prior business
     relationship, and will comply with any other standard AOL policies and
     limitations relating to distribution of bulk e-mail solicitations or
     communications through or into AOL's products or services (including,
     without limitation, the requirement that Advertiser provide a prominent and
     easy means for the recipient to "opt-out" of receiving any future
     commercial e-mail communications from Advertiser. Advertiser will not use
     the Advertisement or any other aspect of AOL's products or services to
     promote or solicit on behalf of a Competitive Product.

     (b) Advertiser shall ensure that its collection, use and disclosure of
     information obtained from AOL members under this Insertion Order Agreement
     ("Member Information") complies with (i) all applicable laws and
     regulations and (ii) AOL's standard privacy policies, available on the AOL
     Service at the keyword term "Privacy" (or, in the case of Advertiser's
     site, Advertiser's standard privacy policies so long as such policies are
     prominently published on the site and provide adequate notice, disclosure
     and choice to users regarding Advertiser's collection, use and disclosure
     of user information).

     (c) Advertiser shall ensure that each request of Member Information shall
     clearly and conspicuously specify to the AOL members at issue the purpose
     for which the Member Information collected by Advertiser shall be used (the
     "Specified Purpose"). Advertiser shall limit use of the Member Information
     to the Specified Purpose. In the case of AOL members who purchase products
     or services from Advertiser, Advertiser will be entitled to incorporate
     such members into Advertiser's aggregate lists of customers; provided that
     Advertiser shall in no way: (i) disclose Member Information in a manner
     that identifies AOL members as end-users of an AOL product or service (or
     in any other manner that could reasonably be expected to facilitate use of
     such information by or on behalf of a Competitive Product); or (ii)
     otherwise use such Member Information in connection with marketing of a
     Competitive Product. This section shall survive the completion, expiration,
     termination or cancellation of this Insertion Order Agreement.

9.   Miscellaneous. The parties to this Insertion Order Agreement are 
     -------------
     independent contractors. Neither party is an agent, representative or
     partner of the other party. Neither party shall have any right, power or
     authority to enter into any agreement for or on behalf of, or incur any
     obligation or liability of, or to otherwise bind, the other party. The
     failure of either party to insist upon or enforce strict performance by the
     other party of any provision of this Insertion Order Agreement or to
     exercise any right under this Insertion Order Agreement shall not be
     construed as a waiver or relinquishment to any extent of such party's right
     to assert or rely upon any such provision or right in that or any other
     instance. Except where otherwise specified herein or in the Insertion
     Order, the rights and remedies granted to a party under this Insertion
     Order Agreement are cumulative and in addition to, and not in lieu of, any
     other rights

                                       12

<PAGE>
 
     or remedies which the party may possess at law or in equity. Advertiser
     shall not (i) issue any press releases or public statements concerning the
     existence or terms of this Insertion Order Agreement or (ii) use, display
     or modify AOL's trademarks in any manner absent AOL's express prior written
     approval. Either party may terminate this Insertion Order Agreement (a) at
     any time with written notice to the other party in the event of a material
     breach of this Insertion Order Agreement by the other party, which remains
     uncured after thirty days written notice thereof; (b) immediately following
     written notice to the other party if the other party (1) ceases to do
     business in the normal course, (2) becomes or is declared insolvent or
     bankrupt, (3) is the subject of any proceeding related to its liquidation
     or insolvency (whether voluntary or involuntary) which is not dismissed
     within ninety (90) calendar days, or (4) makes an assignment for the
     benefit of creditors. Additionally, in the event of a change of control of
     Advertiser which results in control of more than 50% of the equity
     securities of Advertiser or the power to vote for the election of directors
     or other governing authority of Advertiser by an AOL Competitor , AOL may
     terminate this Insertion Order Agreement by providing forty five (45) days
     prior written notice of such intent to terminate. For the purposes hereof,
     an "AOL Competitor" shall be any entity listed on Exhibit F attached
     hereto; provided, however, that from time to time AOL shall have the right
     to add to such list as reasonably determined by AOL, provided that AOL may
     add to such list no more than once every three months. Notwithstanding the
     foregoing, to the extent that Advertiser can demonstrate to AOL's
     reasonable satisfaction that Advertiser is engaged in negotiations with any
     third party that is not listed on Exhibit F, which negotiations would
     result in a change of control of Advertiser as provided herein, AOL shall
     not have the right to add such third party to the list after Advertiser has
     so reasonably demonstrated to AOL that Advertiser is in negotiations with
     such third party. This Insertion Order Agreement sets forth the entire
     agreement between Advertiser and AOL, and supersedes any and all prior
     agreements of AOL or Advertiser with respect to the transactions set forth
     herein. No change, amendment or modification of any provision of this
     Insertion Order Agreement shall be valid unless set forth in a written
     instrument signed by the party subject to enforcement of such amendment.
     Advertiser shall not assign this Insertion Order Agreement or any right,
     interest or benefit under this Insertion Order Agreement without the prior
     written consent of AOL. Assumption of the Insertion Order Agreement by any
     successor to Advertiser (including, without limitation, by way of merger or
     consolidation) shall be subject to AOL's prior written approval. Subject to
     the foregoing, this Insertion Order Agreement shall be fully binding upon,
     inure to the benefit of and be enforceable by the parties hereto and their
     respective successors and assigns. In the event that any provision of this
     Insertion Order Agreement is held invalid by a court with jurisdiction over
     the Parties to this Insertion Order Agreement, (i) such provision shall be
     deemed to be restated to reflect as nearly as possible the original
     intentions of the Parties in accordance with applicable law and (ii) the
     remaining terms, provisions, covenants and restrictions of this Insertion
     Order Agreement shall remain in full force and effect. Both parties shall
     adhere to all applicable laws, regulations and rules relating to the export
     of technical data and shall not export or re-export any technical data, any
     products received from the other party or the direct product of such
     technical data to any proscribed country listed in such applicable laws,
     regulations and rules unless properly authorized. This Insertion Order
     Agreement may be executed in counterparts, each of which shall be deemed an
     original and all of which together shall constitute one and the same
     document. Except with respect to any claims brought by Advertiser in
     connection with Exhibit E or with respect to the AOL Promos, this Insertion
     Order Agreement shall be interpreted, construed and enforced in all
     respects in accordance with the laws of the Commonwealth of Virginia,
     except for its conflicts of laws principles. Except as otherwise provided
     herein, Advertiser hereby irrevocably consents to the exclusive
     jurisdiction of the courts of the Commonwealth of Virginia and the federal
     courts situated in the Commonwealth of Virginia in connection with any
     action arising under this Insertion Order Agreement. With respect to any
     claims brought by Advertiser in connection with Exhibit E or with respect
     to the AOL Promos, such claims will be interpreted and enforced in
     accordance with the laws of the State of California and AOL hereby consents
     to the exclusive jurisdiction of the courts of the State of California and
     the federal courts situated in the State of California in connection with
     any claim brought by Advertiser in connection with Exhibit E or with
     respect to the AOL Promos.

                                       13

<PAGE>
 
                                   EXHIBIT D
                                   ---------


                                AOL TO PROVIDE
                                --------------

                                       14

<PAGE>
 
                                   EXHIBIT E
                                   ---------
                                        
             ADVERTISER SOFTWARE DISTRIBUTION TERMS AND CONDITIONS
             -----------------------------------------------------
                                        
1.   Terms and Conditions.  The following terms and conditions shall govern the
     --------------------                                                      
     distribution by AOL of the advertiser software.

2.   Definitions.  As used in this Exhibit E, the following terms shall have the
     -----------                                                                
     following meanings:
  
     "Affiliate" shall mean an entity in which AOL holds at least a nineteen
      ---------                                                             
     percent (19%) equity interest.

     "AOL Client" shall mean the object code form of the client software for
      ----------
     Win16, Win32 and Mac developed and distributed by AOL that enables end-
     users to subscribe to, access and use the AOL Service, and upgrades
     thereto.

     "Authorized Testing Service" shall mean any third-party person or entity
      --------------------------                                             
     designated in writing by AOL, in its sole discretion, to offer support and
     quality assurance services relating to interoperability of third party
     products with the AOL Client and the AOL Service.

     "Commerce Customer" shall mean any Customer of Advertiser acquired through
      -----------------
     the distribution of the Advertiser Software by AOL as provided hereunder
     and who purchases the Advertiser Product at least two times.

     "Customer" shall mean end-user customers of the Advertiser Software.
      --------                                                           

     "Documentation" shall mean the documentation provided to AOL by Advertiser
      -------------
     for use with the Advertiser Software. "Software "License Agreement" shall
                                            --------------------------- 
     mean Advertiser's standard software license agreement between Advertiser
     and Customers, as provided by Advertiser to AOL for inclusion with the
     Advertiser Software.

3.   License Grant.  Subject to all the terms and conditions of this Insertion
     -------------                                                            
     Order Agreement, Advertiser hereby grants to AOL and its Affiliates a
     worldwide, non-exclusive, non-transferable, royalty-free license to use,
     reproduce, market, promote and distribute to end users through its usual
     and customary channels of distribution, solely to the limited extent and
     for the express purposes stated herein, the Advertiser Software in object
     code form, through CD-ROMs any other physical media containing the AOL
     client.

4.   Copying/Reverse Engineering.  AOL agrees not to (i) disassemble, decompile
     ---------------------------                                               
     or otherwise reverse engineer the Advertiser Software or otherwise attempt
     to learn the source code, structure, algorithms or ideas underlying the
     Advertiser Software, (ii) take any action contrary to Advertiser's Software
     License Agreement, except as expressly and unambiguously agreed upon by
     Advertiser, (iii) alter or modify the Advertiser Software except as agreed
     upon by Advertiser, (iv) attempt to disable any security devices or codes
     incorporated in the Advertiser Software, or (v) allow or assist others to
     do any of the foregoing.

5.   Advertiser's Obligations.
     ------------------------ 
     (i)   Certification Requirements. AOL shall provide to Advertiser a written
           -------------------------- 
           copy of, and Advertiser shall comply with, all quality assurance and
           testing requirements for the Advertiser Software to be distributed by
           AOL hereunder, as may be reasonably amended by AOL from time to time,
           and together with any other reasonable quality assurance and testing
           requirements delivered by AOL in writing (including amendments) to
           Advertiser, the ("Certification Requirements").

     (ii)  Support and Quality Assurance by the Authorized Testing Service.  The
           ---------------------------------------------------------------      
           Authorized Testing Service shall provide support and quality
           assurance testing with respect to the Advertiser Software and
           interoperability of such products with the AOL Client and the AOL
           Service. Support and quality assurance testing shall be provided on
           terms and conditions to be worked out between Advertiser and the
           Authorized Testing Service and at Advertiser's expense. In connection
           with the foregoing, Advertiser shall deliver a master copy of the
           Advertiser Software in object code form, along with any required
           Documentation to the Authorized Testing Service and AOL no later than
           May 15, 1999. The Authorized Testing Service shall perform quality
           assurance testing on the Advertiser Products in accordance with the
           Certification Requirements. If and when the Authorized Testing
           Service determines that any such product meets the relevant
           Certification Requirements, the Authorized Testing Service shall then
           certify in writing that such product is a "Complying Product". AOL
           shall use commercially reasonable efforts, if and to the extent
           within its control and consistent with the purposes hereof, to help
           expedite such testing processes by the Authorized Testing Service.

     (iii) AOL Release Approval. AOL shall have the right to inspect the
           --------------------
           Complying Product prior to commercial production or public release by
           AOL under this Agreement. AOL shall, in its discretion (but based
           upon commercially reasonable factors (including without limitation a
           change of control of Advertiser, or technical or operational problems
           or incompatibilities), provide notice of approval or rejection within
           fifteen (15) business days of receiving certification from the
           Authorized Testing Service that such product is a Complying Product
           together with a copy of the Complying Product. AOL shall have no
           obligation to distribute any copy of the Advertiser Software that has
           not first obtained release approval from AOL. The parties may
           negotiate in good faith to cure any circumstance or issue causing AOL
           to so reject, provided that if AOL does not approve release pursuant
           to this Section 5(iii), then AOL shall refund to Advertiser any
           payments made by Advertiser to AOL pursuant to Section 9(i) of this
           Exhibit E.

                                       15

<PAGE>
 
     (iv)  Re-certification Requirements. Revisions of copies of the Advertiser
           -----------------------------
           Software that have previously been certified by the Authorized
           Testing Service must be re-certified. For purposes of this provision,
           a "revision" is defined as any version of a Complying Product that
           contains programming code that differs materially from the Complying
           Product. Without limiting the foregoing, revisions include
           maintenance updates, patches, fixes, and new releases of a Complying
           Product. Revisions to a Complying Product shall be re-certified
           according to the Certification Requirements, unless AOL or the
           Authorized Testing Service first provides to Advertiser in writing a
           list of "Re-Certification Requirements," if any, in which case such
           Re-Certification Requirements shall apply.

6.   AOL's Distribution Obligations.  Subject to the provisions of Section 5
     ------------------------------                                         
     of this Exhibit E, and provided that Advertiser is otherwise in compliance
     with the provisions of this Insertion Order Agreement, AOL shall distribute
     the Advertiser Software with a minimum number of [***]* AOL 4.0 CD-ROMs
                                                       ---
     containing the AOL Client which is sent by AOL in direct marketing programs
     to prospective AOL customers during the period commencing on May 15, 1999
     and ending on September 1, 2000 (the "Distribution Period"); provided
     however, that (i) AOL shall have the right to continue distribution of the
     Advertiser Software after the Distribution Period has ended subject to the
     terms and conditions hereof and (ii) if Advertiser shall not have delivered
     a master copy of the Advertiser Software to the authorized testing service
     and AOL by May 15, 1999, then AOL shall no longer be obligated to
     distribute the Advertiser Software with a minimum number of [***]* AOL 4.0
                                                                  ---
     CD-ROMs, and in such event, AOL `s sole obligation will be to distribute
     the Advertiser Software during the period commencing on the date on which
     the Advertiser Software becomes a complying product and ending at the end
     of the Distribution Period. When the end-user installs the AOL Client on
     the end-user's system, the Advertiser Software installation program will be
     automatically copied onto the end-user's hard drive, and the end-user will
     be presented with the opportunity to install the Advertiser Software. AOL
     will distribute the Advertiser Software together with, and subject to, the
     terms of the Software License Agreement furnished by Advertiser.
     Notwithstanding the foregoing, (i) once AOL begins distribution of the
     advertiser software, AOL shall not be obligated to distribute any updates
     or upgrades to the Advertiser Software, and (ii) AOL reserves the right, in
     the event of technical problems or incompatibilities (e.g., new "bugs"),
     excessive usage, or other situations which may adversely affect the user
     experience or AOL's costs (collectively, an "Adverse User Situation"), not
     to include any Advertiser Software on such CD-ROMs (a "Pull"); provided
     however that, in the event of a Pull, AOL shall deliver written notice
     thereof to Advertiser within five (5) business days of such Pull. A Pull
     will remain in effect as long as any Adverse User Situation remains, in
     AOL's reasonable discretion. If such Adverse User Situation is not cured to
     AOL's reasonable satisfaction within thirty (30) days from such notice,
     then AOL's obligations hereunder shall terminate, and Advertiser shall not
     be obligated to make any further payments under section 9(i) hereof.

7.   Distribution Requirements.  End-users who install the Advertiser Software
     -------------------------                                                
     distributed pursuant to this will be prompted to send an electronic
     registration to Advertiser the first time they attempt to use the
     Advertiser Software via the end-user system on which the Advertiser
     Software is installed. During such electronic registration, Advertiser
     shall create a process by which such end-user will be identified as a user
     obtained through the 4.0 CD-ROMs distributed by AOL hereunder. AOL agrees
     not to interfere with, obfuscate, remove or alter any of the automatic
     installation mechanisms, electronic registration mechanisms, or patent,
     copyright or other proprietary rights notices included in the Advertiser
     Software provided by Advertiser to AOL. AOL's obligations under this
     Section 7 shall be contingent upon Advertiser's delivery of Advertiser
     Software that has been quality assurance tested in accordance with Section
     5 hereof.

8.   Installation and Support.  Advertiser shall be solely responsible for
     ------------------------                                             
     providing Customers with installation, maintenance and technical
     integration support with respect to the Advertiser Software. AOL shall
     notify Advertiser as soon as possible of AOL's receipt of any customer
     requests for support or assistance with respect to the Advertiser Software.

9.   Payments.  In connection with AOL's obligations hereunder, Advertiser shall
     --------                                                                   
     pay to AOL the following:

     (i)  Cash Payments. Advertiser shall pay to AOL a cash amount equal to
          $400,000 as follows: (a) [***]* on May 15, 1999, (b) [***]* on August
                                    ---                         ---  
          1, 1999, (c) [***]* on November 1, 1999, and (d) [***]* on February 1,
                        ---                                 --- 
          2000.
          
     (ii) Bounty Payments. Advertiser shall pay to AOL a bounty payment of
          [***]*, for each Commerce Customer acquired by Advertiser during the
           ---
          Term and for a period of three years thereafter. This provision shall
          survive the termination or expiration of this Insertion Order
          Agreement.


     *  [***]  Confidential treatment has been requested for the bracketed
              portions. The confidential redacted portion has been omitted and
              filed separately with the Securities and Exchange Commission.

                                       16

<PAGE>
 
10. Auditing Rights. Advertiser will maintain complete, clear and accurate
    records of all expenses, revenues and fees in connection with the
    performance of this Insertion Order Agreement, including reports which
    indicate the number of customers acquired as a result of the distribution of
    the Advertiser Software by AOL, and the number of such customers which
    become Commerce Customers . For the sole purpose of ensuring compliance with
    Section 9(ii) of this Insertion Order Agreement, AOL (or its representative)
    will have the right to conduct a reasonable and necessary inspection of
    portions of the books and records of Advertiser which are relevant to
    Advertiser's performance pursuant to this Insertion Order Agreement. Any
    such audit may be conducted after twenty (20) business days prior written
    notice to Advertiser. AOL shall bear the expense of any audit conducted
    pursuant to this Section 9 unless such audit shows an error in AOL's favor
    amounting to a deficiency to AOL in excess of five percent (5%) of the
    actual amounts paid and/or payable to AOL hereunder, in which event
    Advertiser shall bear the reasonable expenses of the audit. Advertiser shall
    pay AOL the amount of any deficiency discovered by AOL within thirty (30)
    days after receipt of notice thereof from AOL. This provision shall survive
    the termination or expiration of this Insertion Order Agreement for an
    additional three year period.

                                       17

<PAGE>
 
                                   EXHIBIT F
                                   ---------
                                        

Yahoo!
Excite
Snap!/CNET
Infoseek
Lycos
Geocities
Tripod
Hot Bot
Amazon.com
AT&T Worldnet
Mindspring
Earthlink
MCI Internet Services
Prodigy
Road Runner Group
@ Home
Hotmail
Juno
WhoWhere
IChat
TalkCity
Concentric
Juno
Erol's
WorldCom
MediaOne, Inc. (US West Media Group Subsidiary)
Microsoft Network
Microsoft Corporation
Netcom
All Interactive Divisions of RBOCs and CLECs
Web TV
Alta Vista
MS Verticals (Expedia, Carpoint, MSNBC)
Pointcast
Walt Disney Interactive Services
AT&T Interactive Services
GTE Interactive Services
Sprint Interactive Services
MSNBC
NBC Interactive Services
Jfax

                                       18

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