Full-Function Version of Net Perceptions Recommendation Engine

To Be Included in StoryServer 5.0 Platform Product

MINNEAPOLIS, Nov. 22 /PRNewswire/ -- Net Perceptions Inc. (Nasdaq: NETP) today announced that it has signed an agreement with Vignette Corporation (Nasdaq: VIGN) to embed a full-function version of the Net Perceptions Recommendation Engine with Vignette's StoryServer(TM) platform product.

The agreement significantly enhances the partnership between Net Perceptions, the leading supplier of realtime personalization solutions, and Vignette, the leading provider of e-business platform and application software, by adding the Net Perceptions Recommendation Engine as a complete feature.

Since mid-1998, Vignette has embedded a limited-function Net Perceptions Recommendation Engine with Vignette's StoryServer platform product. Now, the complete Net Perceptions Recommendation Engine will be available in Vignette's StoryServer 5.0 platform product, with general availability of the product expected next month. Further, Vignette will provide the Recommendation Engine to all customers who upgrade previous versions of the StoryServer platform product.

"We are extremely excited about this new agreement," said Steven Snyder, president and CEO of Net Perceptions. "With analysts projecting that Vignette will add 500 new customers in 2000, our partnership substantially extends the Net Perceptions customer base. The embedding of our realtime Recommendation Engine with the StoryServer platform product will enable all Vignette customers to immediately begin taking advantage of our technology in their applications, thereby enabling them to deliver an unprecedented personalized experience to each of their users."

Greg Peters, president and CEO of Vignette, said, "We believe that the addition of the Net Perceptions Recommendation Engine to the StoryServer platform product gives Vignette a significant competitive advantage in the e-business platform market. In the past 12 months, personalization has moved from buzzword to business-critical. With the Net Perceptions Recommendation Engine embedded in our StoryServer platform product, Vignette is leapfrogging competitors by offering a more complete solution to every customer."

Personalization Is Business-Critical

According to a recent study by Nielsen//NetRatings, sites that offer collaborative filtering-based recommendation engines enjoy a much higher conversion rate than non-personalized sites. Amazon.com and Drugstore.com had conversion rates of 8.3 percent and 7.9 percent in August, while sites such as Reel.com and J. Crew lagged with conversion rates of 3.5 percent and 3.4 percent, respectively. Further, the study found that personalized content appears to be the important factor -- with price not playing as much of a significant role in distinguishing the most successful e-merchants from their competitors.

"Personalization significantly increases a site's customer loyalty and the conversion of browsers into buyers," Snyder said. "Personalization is a competitive imperative. E-commerce companies not only have to communicate to their customers on a personalized one-to-one basis, but they have to do it well."

About Vignette Corporation

Vignette Corporation is the leading supplier of e-business applications for building online businesses. Vignette's e-business applications and services enable Internet businesses to reach more prospects, attract and retain new customers, increase overall customer satisfaction and raise the total purchase per visit. Vignette powers more than 400 of the leading dot.com and Fortune 500 e-businesses, including Baan, Merrill Lynch, Land's End, US West, National Semiconductor, CBS, DaimlerChrysler, CheckOut.com, Qualcomm, CNET, Bertelsmann and Travelocity-Preview Travel. Vignette's e-business applications transparently automate the customer's side of the interaction, taking away all the anxiety and work involved in being a customer. Headquartered in Austin, Texas, Vignette Corporation has offices located throughout Europe and in Australia and can be found on the Web at www.vignette.com .

About Net Perceptions

Net Perceptions is the leading supplier of realtime personalization solutions that enable businesses to market to customers on a true one-to-one basis across multiple customer touchpoints. Net Perceptions solutions increase new and repeat business by learning more about each customer's individual needs, tastes and preferences with every interaction, then making increasingly personalized product and service recommendations. Net Perceptions, based in Minneapolis, is a publicly held company which operates additional offices in New York, San Francisco and Reading, England, and a joint venture office in Japan. Customers include many of the world's best-known brands, including Art.com, Bertelsmann, Billboard TalentNet, CDnow, E!Online, Micron, SkyMall, Tower Records and Ticketmaster Online. For more information about Net Perceptions products, visit www.netperceptions.com or call 800-466-0711.

Net Perceptions is a registered trademark of Net Perceptions. All other trademarks are the property of their respective owners. This news release contains forward-looking statements that involve a number of risks and uncertainties. Among the important factors that could cause actual results to differ materially from those indicated by such forward-looking statements are the company's limited operating history, delays in product development, development of the Internet market, changes in product pricing policies, competitive pressures, and the risk factors detailed from time to time in the company's periodic reports and registration statements filed with the U.S. Securities and Exchange Commission.

SOURCE Net Perceptions, Inc.

-0- 11/22/1999

/CONTACT: Jacqueline Hanson of Net Perceptions, 612-918-1749, or 800-466-0711, or jhanson@netperceptions.com; or Susanne Buti of Waggener Edstrom, 425-637-9097, or sbuti@wagged.com, for Net Perceptions/