I think that the have a LONG, HARD road ahead of them. The IPO will give them the money to buy acquisitions which is the only way the company will grow.
Most people I talk to, myself included, are getting burned out. I really don't give a rats ass about my long lost friend's dog that pooped on the floor, or how they had to take their kid to the Emergency room at 3am last night. People on FB are sharing way too much and 90% of it is complaining and bitching.
The way I look at FB is that I can offend the most amount of people with the least amount of effort.
IMO it is not worth any where close to the valuation. At one time MySpace was the big thing. At one time AOL was the big thing. FB will probably come and go.