I have yet to try it out and frankly, I doubt if I ever would.
I don't like the fact that most deposits/withdrawals are set to manual approval. That could cost me hours and then, in turn, cost me money.(That's me though. )

Anyway, I'm not sure but it seems they're partners with btc-e? (If I were to use xbtc-e,then I'd confirm with btc-e support first if they really are partners.)

https://btc-e.com/news/229