This is utterly insane.
If you look at the order book of mtgox you'd see there are much more request for buying than selling.
I, too, believe that the Bitcoin value is still very low if you consider it's vast potential.
But that's the most of it , POTENTIAL. It has yet to gain enough market creditably to go this high, this fast.
I see a lot of profit taking in the near by future ( Today < Near by future > Friday ).