Yahoo! is testing the integration of Delicious user generated bookmarks into Yahoo search results pages, as reported by Michael. Yahoo! had acquired delicious in late 2005, since then, they works independently. Some users will see the Delicious icon as part of their normal search results, which tells them how many people have bookmarked those pages, as well as the tags people have supplied for those pages. An search example is here.
Yahoo!, Search, Search Engine, Search Result, Delicious, del.icio.us, Integration