I agree with most of what you said, but mapping CRUD directly onto the verbs is perhaps a little simplistic. See http://jcalcote.wordpress.com/2008/10/16/put-or-post-the-res... for a discussion on it. The very short version is that idempotency is important, POST must be used for non-idempotent updates, and there is no reason PUT can't be used to create if you know the ID of the resource.