The fall of Mtgox really has nothing to do with value, imagined or real, in bitcoin at all. Mtgod is no more a universal entity tied to bitcoins than the Bank of America is to the US Dollar. A brokerage site, that's it.
Anyone foolish enough to store a wallet online deserves to lose their proverbial shirts. My bitcoins are stored on USB keys, with multiple backups in multiple places, one being a safety deposit box. Mtgox folding didn't affect me none 
This is the wild west moment for Bitcoin. As major entities (ie TBTF banks) get their claws into it and as government regulators descend, it'll become stable. Prime example is NASCAR racing, it has it's roots in moonshiners out running law enforcement. Now it's a multi billion dollar industry.
