WCF in the .NET Framework 3.5 includes simplified support for building services that adhere to the protocols of the web. To highlight these capabilities, we published Picture Services. Picture Services ( http://www.cloudsamples.net/pictureservices/ ) is a relatively simple sample that exposes pictures using the REST API in WCF. It represents a set of pictures as an ATOM or RSS feed, and provides access to single pictures using simple HTTP GETs. Pictures can come from a variety of sources including