Due to fact that it's the first exchange accepting titties) I believe that the hacker will face serious problem with cashing it out. If that really happened, post details here + in this thread https://bitcointalk.org/index.php?topic=438373.20 and I think we'll catch the jerk.

Also, if I was this exchange owner, I think that I would offer some bounty to hacker if he'd explain how he did it in exchange to returning the titties to it rightfull owner)))) Hacker will definitely have problems with cashing out the titties, so if he's not stupid, he will give it back for some %, and everyone will win. Of course, it's not a pleasure to pay money to people like this, but try to think about it like it was security audit.