Forgive my intrusion, but I'm wondering, a friend of mine is being quite insistent in having me join his adventures in TSW, and soon U.S. Amazon is expected to have the game at a juicy discount, but being the US Store I expect it to be a US key, and my friend is European.

Are TSW's servers separated by region? I've been googling up about it and though it does look like everyone plays on the same servers, I couldn't find a definite "yes" or "no" answer.