I used to argue in favor of json-rpc as well, but I have to say that I have allied with the dark side now. if for no other reason than caching, with REST you ha

I used to argue in favor of json-rpc as well, but I have to say that I have allied with the dark side now. if for no other reason than caching, with REST you have fine control over what addressable resources get cached and which do not. This is huge for performance in some systems. I have found once you use REST semantics in earnest to build an application, it is hard to levy argument against it. So much of the webs infrastructure starts to work with you and not against you once you start to use it.