Wait until the first earnings release for the REAL fun to begin in FB. It's either exploding to the upside or gapping down so huge that maria Bartiromo will blow a gasket.
So? Now conversations can take place from a device that will allow you to log in automatically. The issue is the propensity of these people to buy the product they are presented with according to their conversation.
There are not there to buy, therefore they don't "see" the ads.
GM was the first to pull out, more will pull it out once they realize their analytics.