Great session at MIX on RESTful Services and WCF
see https://sessions.visitmix.com/ and search for session T01, titled "Creating a RESTful API with WCF, it's focused on the newly released developer APIs for https://MySpace.com.
see https://Developer.myspace.com and https://RestChest.com - the RestChess site has the demo code shown in the session and it's well cool!!
Cheers Dave