Rails is single-threaded, so I don't have to worry about changing
stuff around when a request is made, right? I'm going to be using
ActiveResource, but don't know ahead of time what the class's site
will be. So basically on every request I'll be changing it (if I need
to). Is it okay to do that? Once a request is made, no other
requests can use the process...so as long as I update MyARes.site I
should be okay. Is there a better all around way to do it?