according to mt gox it only takes one market dump of 87,000 btc to take price back down to $50 yip yip
and to think about that one single entity holds well over a million coins, or more than 10% of all the coins in circulation? can you even imagine that in fiat money terms? who would trust that kind of money, especially since you dont even know who the boss is.
This isn't a well-known fact, but once it gets out, this thing is gone. no sane investor would take the risk knowing the above. And I'm thinking of the Chinese.