Assuming this is not a scam, which it probably is.

Passport scans for people including many millionaires?  I'm sure it would be quite valuable in the hands of identity thieves and other criminals.  Anyone fool enough to trust their information to Gox is going to have to worry about all kinds of scams being done in their names.  Never mind that terrorist organizations often use the stolen passports of other individuals, so they might end up looking at the wrong end of a terror investigation they have nothing to do with, too.

Goxed indeed!

Even, though, if the current "offer" is someone trying to swindle people who really do deserve to lose their money if they're trying to buy this shit, we have no idea who has all this data, and no reason to believe one of them won't, in fact, eventually sell it, or just publish it for the fuck of it.