AdForce Replaces 100% of GeoCities Business; 14 New Customers and Robust Growth from Existing Customers Replace AdForce's GeoCities Business in 40 Days.

CUPERTINO, Calif.--(BUSINESS WIRE)--July 19, 1999--

AdForce, Inc. (Nasdaq:ADFC), a leading independent provider of centralized, outsourced ad management and delivery services on the Internet, announced 14 new customers signed, and a strong increase in the total volume of ads served in the quarter ending June 30, 1999. New customers include Wise Ads, Language Force, Net Power, Gamers.com, Topfile.com, Echo Images Inc., PowersGolf.com, Virtual Analysts, IsoSmart, Opensite Technologies and Artist Direct. In addition, AdForce experienced robust growth in volumes with its three largest customers, AdSmart, 24/7 Media and Netscape, including growth in international business for both 24/7 Media and Netscape bringing the total number of ads served in the quarter ending June 30, 1999 to 18.4 billion, compared to 13.4 billion in the prior quarter.

In a separate release, AdForce today announced record revenues for the June quarter.

"The growth of AdForce's business from both its existing customer base and from new customers continues to validate the strength of our business model," said Dee Cravens, Vice President of Marketing, AdForce. "It's been just over a month since GeoCities was acquired by Yahoo! and we have successfully replaced that customer's volume. That's a pretty a pretty remarkable testimonial to our unique market position of serving ads as a neutral infrastructure for our customers. More and more, publishers, recognize that AdForce does not compete with them for ad revenues. Furthermore, our centralized adserving technology is designed for them to leverage ad management and delivery and data collection to maximize their own customer relationships and profits while protecting the integrity of their data."

About AdForce (www.adforce.com)

AdForce is "The Force in .com Marketing" and a leading provider of centralized advertising services, enabling online publishers, rep firms, ad agencies and advertisers to leverage the unique advantage 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 ad 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 strategic partnerships with America OnLine, Inc., and Experian (formerly Metromail). AdForce has offices in Cupertino, CA, Costa Mesa, CA, and New York, NY.

This press release contains certain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Act of 1934, as amended. These statements are subject to the "safe harbor" created by those sections and include, but are limited to AdForce's expectation that each of the customers listed will continue to use AdForce's ad delivery, data collection and management services, and the expectations that its customer base will continue to grow. AdForce's actual results for future periods could differ materially from those predicted in these forward-looking statements. Factors that could cause actual events or results to differ include, but are not limited to its ability to maintain the performance and reliability of its systems, its need to continue scaling its systems successfully and to add new features and functionality to meet market demands, contractual provisions permitting termination of agreements between AdForce and its customers, competitive pressures affecting AdForce and /or its customers, continued consolidation in the industry affecting AdForce's customers or competitors, and other risks described in AdForce's Registration Statement on Form S-1, as amended, filed with the Securities and Exchange Commission. AdForce undertakes no obligation to update froward-looking statements to reflect events or circumstances occurring after the date of such statements.