1stUp.com Introduces Webmercials: Rich Media TV-Quality Video Commercials.

Business/Technology Editors

SAN FRANCISCO--(BUSINESS WIRE)--April 19, 2000

1stUp.com Corporation today introduced the availability of Webmercials, an innovative advertising tool designed to enable advertisers to reach the more than 3 million consumers who enjoy 1stUp.com-powered Internet access through 70 partner-branded offerings, including AltaVista, Lycos and Excite@Home. The 1stUp.com Webmercial is a television-quality, rich media commercial or Flash advertisement that combines both audio and video and is shown while the user waits for the computer to dial-up and access the Internet. 1stUp.com is a leading provider of sponsor-supported Internet access solutions and a majority-owned operating company of CMGI, Inc.

"We are very excited to offer marketers this powerful advertising vehicle for reaching a captive audience," remarked Jonah Steinhart, vice president of marketing and corporate communications for 1stUp.com. "With the typical Internet user logging on nearly three times per day, the Webmercial provides advertisers with an enormous window of opportunity to make an impression with an entertaining t.v. quality ad."

Technical and Creative Requirements

The 1stUp.com Webmercial supports a variety of creative types and sizes and can include full audio and interactive elements. Because the files are downloaded onto a user's computer before play, the user sees a high quality advertisement, regardless of the user's modem speed. Creative content for Webmercials can be submitted in three formats including, Flash files, full-length t.v. commercials on Betacam SP tape, or still images in gif or jpeg formats.

"This is one of the first rich media opportunities on the Internet that is not hindered by technological limitations and allows advertisers to use existing creative," said Ann Crady, vice president of strategic development for 1stUp.com. "Because the Webmercials are downloaded on each user's computer during a previous Internet session, the problem of poor picture quality and reliability of streaming technology is eliminated."

Pricing and Availability

1stUp.com Webmercials are available immediately and sold directly through 1stUp's ad sales force. The Webmercials are also sold through 1stUp's ad sales partner, AdSmart. Until May 31, the Webmercials are available for a special introductory rate of $37.50 CPM. For more information, contact the 1stUp.com Ad Sales Force at [e-mail] or 415-293-4700.

1stUp.com Private Label Internet Access Services

1stUp.com provides companies with a complete, private label Internet access solution to customize for their consumers, featuring a reliable, nationwide ISP network, customer support, e-mail, etc. as well as 1stUp.com's patent-pending access technology. 1stUp currently offers its distribution partners tiered Internet access options including, free, fee-based, and broadband services.

1stUp.com's free access technology establishes a high-quality Internet connection with a small "always-on-top" navigation bar featuring useful web tools and highly targeted advertising. The application is easily downloadable (less than 700 KB), and ensures that the navigation bar travels with consumers, wherever they go on the Internet.

The company recently announced the addition of a partner-branded, fee-based Internet service that is free of ever-present banner advertisements. Through this service, 1stUp.com now allows its distribution partners to establish a constant online connection with consumers or employees by offering a fee-based private label Internet access service in addition to 1stUp.com's popular, sponsor-supported free access offering.

About 1stUp.com

1stUp.com, a majority-owned operating company of CMGI, Inc., is a market leader in providing consumer-oriented businesses with sponsor-supported Internet access solutions. 1stUp.com provides patent-pending technology that enables its distribution partners to brand, market and distribute leading edge, free and cost-effective Internet services to their customers. Multiple leading ISPs support 1stUp.com's extensive ISP network. The 1stUp.com network is the largest in North America based on total dial-up numbers and delivers reliable Internet access to over 95 percent of the U.S. and Canada. Aggregating the end-user bases of Alta Vista, Excite@Home, Lycos, Gratis1 by StarMedia, and over 70 additional Internet access brands, 1stUp.com supports over 3 million registered subscribers and is able to pass along the benefits of optimal connectivity costs and advertising revenues to its distribution partners.

For more information, visit www.1stup.com. 1stUp.com Corporation is located at 88 Kearny Street, Suite 800, San Francisco, CA 94108. Telephone: [phone].

This release contains forward-looking statements, which address a variety of subjects including, for example, the expected benefits and functionality of the 1stUp.com Webmercials. The following important factors and uncertainties, among others, could cause actual results to differ materially from those described in these forward-looking statements: 1stUp's products and technologies may not successfully interoperate with those of third parties; 1stUp's business model is dependent upon advertising and may be adversely affected by 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 markets in which 1stUp 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.

1stUp and 1stUp.com are trademarks of 1stUp.com Corporation. All other products and services mentioned may be trademarks or service marks of their respective owners.