Most likely you won't be able to get in the IPO so the question is whether or not you should buy FB stock once it's public. I'd say probably not immediately. My guess is that the stock is going to sky rocket the first few days (weeks?) and then people will cash out. That's when you should buy.
Then again, if you can get in this round, I'd buy.
Then again, if you can get in this round, I'd buy.