I am reading through RESTful Web Services by Leonard Richardson & Sam Ruby and found a good description of a RESTful resource-oriented service vs. a REST-RPC hybrid service vs. an RPC service:
A RESTful, resource-oriented services exposes a URI for every piece of data the client might want to operate on. A REST-RPC hybrid exposes a URI for every operation the client might perform: One URI to fetch a piece of data, a different URI to delete that same data. An RPC-style service exposes one URI for every process capable of handling Remote Procedure Calls (RPC).
Just something I wanted to share. :)