I'm going to be very surprised if FB is going to need to raise another 10B.
Also, it's interesting that when facebook pulled one over on the bankers, "they got screwed", but when the bankers do it to everyone else, it's "business as usual."
Of course Facebook isn't going to get valued as highly the next time through - THEY KNOW THAT - and that's why they got as much out of their IPO as they could.