There's no con here. Anyone who bought at the open price had all the information they needed to make an educated purchase of the Facebook stock. I'm not an institutional investor and I looked at the P/E of 100 and thought it would be kind of silly to buy at that price and many others here seemed to think the same thing.

Zuck has built a valuable company - its just not $100B valuable. But a $25B company isn't peanuts.