SO-Aware is an exciting new tool you can use with your WCF Services. This is not just another UDDI registry. Rather, this is a tool that works for SOAP, REST, and OData services and...you just have to see it in action.
http://channel9.msdn.com/Shows/Endpoint/endpointtv-Meet-SO-Aware-Part-1
http://channel9.msdn.com/Shows/Endpoint/endpointtv-Meet-SO-Aware-Part-2