Mark Zuckerberg doesn't care about the Nay-Sayers. He's made it quite clear that it's his company, and he'll run it how he likes. He just got a huge wodge of money, and he can now spend it however he likes. A win all round, I'd say.
The attitude expressed in your comment is really disturbing.
It seems like people are investing in what other people will be willing to buy this otherwise useless stock at, and those people are only willing to do it because of yet other people willing to buy it for the same reason. Is that not correct? Seems like an extremely bizarre form of "investment", it's betting on a horse, not owning a portion of a horse.