You must've heard of REST. It stands for Representational State Transfer. I used to think that it is a web standard, like WSDL or something, apparently which it is not. REST is just a way of building your applications (just like cient-server is), so there is no REST standard per se. Check this out for something that remotely makes sense about REST:
The one thing I learnt from REST? Don't use GET to change state at the server-side. Let POST do that. Get only gets info, that's all.