AdForce Finalizes Partnership With iwin.com, the Premier Games for Prizes Entertainment Site; AdForce Selected as Ad Serving Solution for iwin.com.

Business Editors, High-Tech Writers

CUPERTINO, Calif.--(BUSINESS WIRE)--Jan. 24, 2000

AdForce, Inc., a majority-owned operating company of CMGI, Inc. (NASDAQ: CMGI), and a leading online provider of centralized, outsourced ad management and delivery services, today announced that it has entered into a partnership agreement with iwin.com, an incentive-based games and entertainment Web site (www.iwin.com). AdForce will provide the ad delivery and management technology infrastructure for iwin, delivering targeted ad campaigns to a growing user base of more than 1.5 million registered users and providing real-time click-through analysis for advertisers on iwin's Web pages.

Internet users who visit the iwin Web site have the opportunity to play games, enter contests, win raffles, and accumulate points known as &uot;icoins&uot; - free of charge. Designed for a broad demographic audience, iwin features games for adults such as Trivia Mania, Solitaire and Bingo as well as the Kid's Zone, a special area devoted entirely to children's fun and educational games such as Hangman and Math Monkey. Based in Los Angeles, iwin offers unique Hollywood-themed prizes such as tickets to major movie premieres, Hollywood memorabilia, and major prizes such as free vacations, cash, electronics, computers and jewelry. According to PC Data, for the week ending January 15, iwin.com generated 59 million page views with the average visitor spending 30 minutes per week on the site. iwin.com generates over 200 million ad impressions monthly.

&uot;As iwin.com continues its significant growth, both in advertising revenues and registered users, we need to implement a scalable, efficient and fast ad delivery system to maximize value for our advertisers and enjoyment for our users,&uot; said Fred Krueger, founder and CEO, iwin.com. &uot;We're pleased to be in business with AdForce and are confident that they will deliver on every level, freeing up our resources to provide top notch games-for-prizes entertainment content for our more than one million registered users.&uot;

&uot;AdForce recognizes that Internet games and entertainment are rapidly growing market segments as advertisers seek sites that retain the interest of visitors. iwin stands out as a leading site with its unique Hollywood and entertainment prizes,&uot; said Chuck Berger, CEO of AdForce. &uot;AdForce has the technical scalability and reliability to support iwin's anticipated growth, as we work together to realize the untapped potential of digital marketing on the Internet and beyond.&uot;

About iwin.com (www.iwin.com)

iwin.com is an advertising-supported Internet site dedicated to games, contests, prizes and entertainment. Through frequency of use, iwin players can accumulate points, called &uot;icoins,&uot; to enter raffles for major prizes such as free vacations, cash, electronics, computers, gift certificates, luxury goods, jewelry, toys, games and Hollywood-themed prizes. The site can be reached at www.iwin.com. iwin has also launched www.eXtremelotto.com, a free Internet lotto site awarding cash prizes of up to $1 million.

About AdForce (www.adforce.com)

AdForce, a majority-owned operating company of CMGI, Inc. (NASDAQ: CMGI), is the Force in Digital Marketing(TM) and a leading provider of centralized advertising services, enabling online publishers, rep firms and advertisers to leverage the unique advantages of the Internet as the first fully interactive medium. Deploying advanced scalable technology and backed by robust data centers, the AdForce service delivers billions of impressions monthly for some of the Internet's most prominent advertisers. AdForce provides a comprehensive suite of products, which allow advertisers and publishers to target, deliver, measure and analyze Internet advertising programs for the best results. AdForce has offices in Cupertino, CA, Costa Mesa, CA, New York, NY and Hong Kong.

About CMGI

With more than 60 companies, CMGI, Inc. (Nasdaq: CMGI) represents the largest, most diverse network of Internet companies in the world. This network includes both CMGI operating companies and a growing number of synergistic investments through its venture capital affiliate, @Ventures. CMGI leverages the technologies, content and market reach of its extended family of companies to foster rapid growth and industry leadership across its network, and the larger Internet Economy. Compaq, Intel, Microsoft, Pacific Century CyberWorks and Sumitomo hold minority positions in CMGI.

CMGI's majority-owned operating companies include Engage Technologies (Nasdaq: ENGA), NaviSite (Nasdaq: NAVI), 1ClickBrands, 1stUp.com, Activate.net, Activerse, AdForce, Adsmart, AltaVista, CMGI Solutions, Equilibrium, Flycast, Green Witch, iCAST, Magnitude Network, MyWay.com, NaviNet, SalesLink, Tribal Voice and ZineZone. The company's @Ventures affiliates have ownership interests in Lycos, Inc. (Nasdaq: LCOS), Critical Path (Nasdaq: CPTH), Silknet (Nasdaq: SILK), Chemdex (Nasdaq: CMDX), MotherNature.com (Nasdaq: MTHR), Asimba.com, AuctionWatch.com, Aureate Media, blaxxun, BizBuyer.com, Boatscape.com, buyersedge.com, CarParts.com, CraftShop.com, eCircles.com, eGroups.com, EXP.com, FindLaw, FoodBuy.com, Furniture.com, HotLinks, INPHO/HomePriceCheck.com, Intelligent/Digital, KOZ.com, Mondera.com, MyFamily.com, NextMonet.com, NextPlanetOver.com, Oncology.com, OneCore.com, PlanetOutdoors.com, Productopia, Raging Bull, SnapFish.com, Speech Machines, ThingWorld.com, Vicinity, Virtual Ink, Visto, Vstore and WebCT.

CMGI Corporate headquarters is located at 100 Brickstone Square, Andover, MA 01810. Telephone: [phone]. Fax: [phone]. Additional information is available on the company's Web site at http://www.cmgi.com.

This release contains forward-looking statements based on current expectations or beliefs, as well as a number of assumptions about future events, and these statements are subject to important factors and uncertainties that could cause actual results to differ materially from those described in the forward-looking statements. The forward-looking statements in this release address a variety of subjects including, for example, the expected benefits resulting from the agreement between AdForce and iwin and the expected functionality of the combination of AdForce's and iwin's technologies and products. The following factors, among others, could cause actual results to differ materially from those described in these forward-looking statements: the risk that AdForce's technology and products will not successfully combine with those of iwin; risks related to the business of AdForce; the adoption of new laws and regulations affecting the provision of Internet advertising services, including laws and regulations covering privacy, pricing and content; and increased competition and technological changes in the industries in which AdForce competes. For a detailed discussion of these and other cautionary statements, please refer to CMGI's filings with the Securities and Exchange Commission, including CMGI's Annual Report on Form 10-K for the most recently ended fiscal year.