I don't know if this is the market reacting to user engagement so much as the perception of potentially increased regulatory scrutiny. If USG was doing it's job

I don't know if this is the market reacting to user engagement so much as the perception of potentially increased regulatory scrutiny. If USG was doing it's job properly, Facebook's ability to monetize would be dramatically lower than it has been historically. That's the real 'danger' right now from the investor POV.