FB already got their $16 billion. If your in it for the long term, uproar away that nest egg should be able to last a while. Check ins, ads, app platform, lots of monetization strategies. The only people burned are short term investors who buy in at a bad time. FB ONLY potential problem is losing RELEVANCE. You don't lose users by not monetizing mobile, but you can lose users by monetizing mobile however. Short/steady wins the race, especially with 16 billion in the bank