David Sze, a venture capitalist from Greylock Capital and investor in Facebook, says he has watched Zuckerberg over the past two years since his investment, and may have underestimated Zuckerberg’s ability to scale. “When I invested, I thought Mark was one in a million. Now I think Mark is maybe one in a trillion.”
http://venturebeat.com/2009/10/02/mark-zuckerberg-the-evolution-of-a-remarkable-ceo/