prostoalex writes "Reuters reports eBay is planning to roll out its own contextual ads network, thus claiming its stake in booming Internet advertising market. Currently both Google and Yahoo! run contextual ads programs (AdSense and Publisher Network, respectively) with MSN's AdCenter not open to publishers yet." From the article: "What goods appear in any particular advertisement will be determined by the keywords on that Web page, a technique known as contextual advertising. A sports Web site would feature links to sporting gear or memorabilia from eBay, for example. As listings change on eBay, advertising automatically changes on affiliated Web sites to reflect the new products or services for sale on eBay. Web site affiliates receive a cut of 40 percent to 70 percent of sales, depending on volumes."