DO NOT BUY ACCOUNTS FROM THIS DUDE.
Whole story: I bought 2 Battlefield 3 accounts from this guy. Trade went nice and he went first. No problem.
LATER, my friend tried to login, but he failed. He checked his mail and said that the e-mail and password was changed.
I was next (like 2/3hours later). My e-mail was changed so was my password.
Conclusion: This guy sold stolen accounts (which I didn't knew anything, only when my friend's account was retrieved by the owner).
Steam account of the dude:
http://steamcommunity.com/id/stewie655