Microsoft Research, Social Desktop

Social Desktop from Microsoft Research is a proof of concept Silverlight application that uses Windows Azure to share, or “socialize”, content on your computer.

The Social Desktop blends the Web and PC by embedding Web oriented sharing inside your desktop,  allowing every document to have the ability to have a backing social URL for sharing without having to upload or copy or move it from it’s natural location. his url provides access not just to the file, but to a built in social experience which includes a rich preview of each item, comments, related items, tags, etc.