1stUp.com Announces Agreement with GTE Internetworking to Expand Free Internet Access Network.

Business Editors

SAN FRANCISCO--(BUSINESS WIRE)--March 20, 2000

New Dial-up Access Services from GTE Internetworking Extend

1stUp.com's Coverage Across U.S. and Further

into Small Cities & Rural Areas

1stUp.com Corporation, a leading provider of sponsor-subsidized Internet access solutions in the United States and a majority-owned operating company of CMGI, Inc, today announced that it has entered into an agreement with GTE Internetworking, a unit of GTE Corp. (NYSE:GTE).

A world leader in E-business infrastructure, GTE Internetworking provides over 850 local access numbers across the United States and over 2500 local access points in 153 countries worldwide. The agreement with GTE Internetworking will add hundreds of new dial access numbers accessible to 1stUp.com-affiliated free access users across the U.S., including expanded coverage in smaller density regions through GTE Internetworking's DiaLinx VISP (Virtual Internet Service Provider) service.

1stUp.com powers leading sponsor-supported free access offerings for consumer-oriented businesses, including AltaVista FreeAccess, FreeLane by Excite@Home, and Lycos Free Internet Access. "Our agreement with GTE Internetworking both reinforces and increases our national ISP coverage, and confirms that free-access is encompassing networks across the U.S.," said Charles Katz, president and CEO of 1stUp.com. "With partners like GTE Internetworking, we will be able to get closer to our company's goal of enabling Internet users--in every town across America--to access the web through a reliable connection, for free."

The DiaLinx VISP service enables 1stUp.com to offer full-service, branded dial-up Internet access to its customers by outsourcing all of the hardware, software and back-office support functions necessary to provide dial-up Internet access. While many ISPs outsource parts of their dial-up infrastructure through DiaLinx, this comprehensive VISP service has changed the business model for organizations interested in outsourcing all ISP services, network and back office services.

"By offering free reliable Internet access, 1stUp.com is helping to pioneer an entirely new way to help millions of U.S. consumers join the digital age," said Patrick Kloepfer, Vice President and General Manager, Remote Access Services of GTE Internetworking. "As the Tier 1 ISP delivering the access infrastructure, GTE Internetworking is excited to be a part of 1stUp.com's further growth and expansion in this marketplace."

About GTE Internetworking and GTE Corp.

GTE Internetworking, a unit of GTE Corp. (NYSE:GTE), offers customers, from consumers to Fortune 500 companies, a full spectrum of integrated Internet services using IP networking technologies. GTE Internetworking delivers complete network solutions, including dial-up and dedicated Internet access, high-performance Web hosting, virtual private networks (VPNs), managed Internet security, network management, systems integration, and Web-based application development for integrating the Internet into business operations. GTE is one of the world's largest telecommunications companies and a leading provider of integrated voice, video and data services. Additional information about GTE Internetworking can be found on the Internet at http://www.bbn.com, and about GTE Corp. at http://www.gte.com.

About 1stUp.com

1stUp.com, a majority-owned operating company of CMGI, Inc. (NASDAQ: CMGI), is a market leader in providing consumer-oriented businesses with sponsor-subsidized Internet access solutions. 1stUp.com provides patent-pending technology that enables its partners to brand, market and distribute leading edge, cost-effective Internet services to their customers. The 1stUp.com solution enables consumers to receive unlimited, free Internet access in exchange for keeping a compact, sponsor-oriented navigation bar on their computer screen. Multiple leading ISPs support 1stUp.com's premium network, which delivers free, reliable Internet access to over 90 percent of the U.S. and Canada. Aggregating the end-user bases of AltaVista, Excite@Home, Lycos, and sixty additional partners, 1stUp.com has the buying power of multiple brands and is able to pass along the benefits of optimal connectivity costs and advertising revenues to its 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 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 of the agreement between 1stUp and GTE Internetworking and the expected functionality of the combination of products and technologies of 1stUp and GTE Internetworking. The following factors, 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 GTE Internetworking; 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.