I completely agree, but one point that he briefly mentions that I think is even more interesting is the idea of a Facebook IPO.

Consider that Facebook isn't going anywhere (most likely) and will be a major company for a long time. That still doesn't change the fact that if they've already done all of the their major growing (user-wise, I'm assuming that they will continue to look for new revenue sources), their IPO could be a significant letdown for investors if there is simply no where to go but flat.

That said, I don't know any more (or less) that this guy..