Dumb question I genuinely don't know the answer to: what's to stop me from buying a hundred Bitcoins from MtGox for $26,000 and selling it elsewhere for $60,000?
Be Mt.Gox, sit at the bid and buy all the Bitcoin you want for $260ish. Get it over to hidden accounts \ people you took the time to set up in the last X months and sell at $600ish.
Laugh all the way to the bank........million and millions and let all you guys A. Believe in Mt.Gox or B. it goes out of biz, who the flying fuck cares, they just cleaned up.