Yahoo Builds Search into Web Pages - "In its latest move to expand the reach of its search results, Yahoo Inc. released a service late Wednesday that provides related search results within the context of a Web page.
Yahoo launched a beta test of the service called Y!Q in an attempt to automatically provide users with relevant search results without requiring them to initiate a query, a Yahoo spokeswoman said. By analyzing the content on a Web page, the service is able to display related results within a dynamic box on the page itself. "
This is quite cool and needsto be seen to be appreciated. You can try it out here or here.