This is of interest, and was asked earlier about Netflix, but I'd like to do this for a low-bandwidth application. That is, if I'm in the U.S., and I'd like the site I'm looking at to see that my request is from the U.S. If I were to use ExitNodes to do this, what would that .torrc line look like? On a Mac OS, where exactly does that .torrc file go?
Now, I understand that this would hugely constrain my available network, and wouldn't be advisable if I didn't have to do it, but I'd still like to understand how to do it. Sure would be nice if there were a more user-friendly way of selecting that option.