Photobucket has collaborated with Microsoft to build Photobucket Visual Search (http://photobucket.com/visualsearch), making use of Silverlight, Windows Live Services and Photobucket's Open API platform. Photobucket Visual Search uses Silverlight to provide a rich and entertaining search experience, by displaying photos and videos in an easy-to-browse interface. The experience shows up search results, as well as related terms, helping users to find images they might not have in the past.
Recognizing that photos are about sharing a social experience, Photobucket decided to use Microsoft's new Windows Live Messenger Web Toolkit to socially enable this Visual Search experience. Windows Live Messenger has over 320 Million active users, with over 32 billion social relationships between them. Sharing an image with friends on Windows Live is as easy as a click of a button with Photobucket Visual Search.
Read the full post at David Chou’s blog at http://blogs.msdn.com/dachou/archive/2009/07/12/silverlight-and-live-messenger-at-photobucket.aspx