I would guess that Facebook couldn't exist without Zuck - not in its current form. He doesn't seem to be afraid of "breaking things." Given the current (even af

I would guess that Facebook couldn't exist without Zuck - not in its current form. He doesn't seem to be afraid of "breaking things." Given the current (even after the recent drop) value of FB, I don't see a line of CEO types at the door who are willing to apply so much daring.