InfoSpace's Dogpile.com Announces Agreement with Kosmix

Business Wire, April 25, 2008

Kosmix to Provide Comprehensive Health Information for Dogpile.com Users

BELLEVUE, Wash. -- InfoSpace, Inc.'s (NASDAQ:INSP) Dogpile([R])(www.dogpile.com), the search site that combines the top results from the leading search engines, today announced an agreement with Kosmix[TM] (www.kosmix.com), a leading content categorization engine for topics on the Web. With this relationship, Kosmix is providing the new "Dogpile Health Guide" widget, with content on a wide variety of health topics, giving Dogpile users better access to expert health-related information on the Web.

Dogpile analyzes the probable intent behind every query and intelligently searches different sources, such as Kosmix.com, that are likely to return the most relevant results. By limiting the sources queried to those most likely to contain the best-matched content, Dogpile's Health Guide is able to return a higher concentration of germaine results, from basic facts to images to videos.

"At Dogpile.com, we're continuously working to improve the search experience by enabling users to discover the most relevant information from the leading authorities," said Mark Whidby, director, search product management of InfoSpace, Inc. "By working with Kosmix, we're able to provide Dogpile users the information they're searching for on a broad range of health-related topics."

The core of Kosmix's technology is a sophisticated algorithm-based categorization engine. Kosmix's technology combs through billions of Web pages and structured data points to aggregate, categorize, and return content specifically targeted to the user's query. By generating every page through its unique algorithm, Kosmix creates rich and relevant home pages automatically for any topic and scales seamlessly as the Web grows.

"Our technology is designed to connect people with the right and relevant content they need at any time," said Anand Rajaraman, co-founder of Kosmix. "Our strength in health information has made the Kosmix technology a powerful choice for publishers as they seek to acquire and retain more online users."

To see how the Kosmix relationship is enabling users to find the most pertinent results on health topics for the Dogpile Health Guide widget, go to www.dogpile.com and type in a health-related query, such as diabetes.

About InfoSpace, Inc.

InfoSpace, Inc., a leading developer of metasearch products, is focused on bringing the best of the Web to Internet users. InfoSpace's proprietary metasearch technology combines the top results from several of the largest online search engines, providing fast and comprehensive search results on InfoSpace sites, including Dogpile (www.dogpile.com) and WebFetch (www.webfetch.com). For the second consecutive year, JD Power and Associates ranked Dogpile highest in customer satisfaction among search engines. InfoSpace's metasearch technology is also available on more than 100 partner sites, including content, community and connectivity sites. More information can be found at www.infospaceinc.com.

About Dogpile.com

Web metasearch engine Dogpile (www.dogpile.com) enables users to discover the best results from the world's top sources. Dogpile is a business of InfoSpace, Inc. (NASDAQ:INSP). For information about InfoSpace, please visit: http://www.infospaceinc.com.

About Kosmix

Every organization has a home page on the Web, every person can have a Web home page, then why not every topic? Kosmix's mission is to create the unofficial home page for every topic on the Web, giving consumers a starting point from which to explore and discover new content online. More information can be found at www.kosmix.com.

Cautionary Note about Forward-Looking Statements

This release contains forward-looking statements regarding InfoSpace's Dogpile.com search site. These forward-looking statements are subject to certain risks and uncertainties that could cause actual results to differ materially from those projected. Forward-looking statements include, without limitation, statements regarding continuing improvements to our site and offering improved features and technology, such as the Kosmix technology. These statements are not guarantees of future performance and are subject to certain risks, uncertainties and assumptions that are difficult to predict. Factors that could affect InfoSpace's actual results include the scope and timing of user adoption and implementation and market acceptance of current and future applications and features of InfoSpace's search technology, including in its Dogpile.com search site, as well as third-party technology used in the site, such as that of Kosmix. A more detailed description of certain factors that could affect actual results include, but are not limited to, those discussed in InfoSpace's most recent Annual Report on Form 10-K and quarterly reports on Form 10-Q as filed from time to time, in the section entitled "Risk Factors." Readers are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this release. InfoSpace undertakes no obligation to update publicly any forward-looking statements to reflect new information, events or circumstances after the date of this release or to reflect the occurrence of unanticipated events.