I\'ve just been reading about REST URLs and seen the following example:
/API/User/GetUser
Now if this is accessed over HTTP with a verb GET isn\'t this a bad
This is not necessarily bad... it has more to do with the framework you are using to generate your rest URLs. The link @Infinity posted is a good resource, but don't limit yourself to a set theory because it can cause an excessive amount of work in certain frameworks.
For example, there is no reason why you wouldn't want to run a GET on /API/Users/{id}/Delete to display an "are you sure" type of message before using the DELETE method.