A new developer center just for WCF REST is now live at MSDN:  http://msdn.microsoft.com/wcf/rest.

Plus the WCF REST Starter kit with oodles of goodies is available at Codeplex: http://www.codeplex.com/aspnet/Wiki/View.aspx?title=WCF%20REST.

There's also a forum to discuss the starter kit:  http://forums.asp.net/1180.aspx