You still have to have in mind that even knowing that the FB parasite is somehow "in my browser and I cant remove it", even if it is not activated, makes me want to immediately toss it away in disgust and go Chrome exclusively.
16 is the latest FF I will be using and recommending and I am very likely not alone. Mozilla forcing FB on us is high treason, and many of us will start recommending Chrome instaed of FF to people we can influence just to harm Mozilla because of this betrayal.
The FF user base rose quickly by word of mouth and by word of mouth it can even more quickly disappear in Chrome's mighty shadow. FF needs us more than we need FF. Keep that in mind when you make decisions like pushing FB on us. You cannot afford playing a dictator.