I don't know which one I'm more worried about. On the one side Facebook can track preferences and something akin to feelings closely, but on the other Google ca

I don't know which one I'm more worried about. On the one side Facebook can track preferences and something akin to feelings closely, but on the other Google can track day-to-day activities much better. If you've ever seen your Google activity log; that's very scary. The accuracy with which your phone can track your movement and where you are at every point in time is unprecedented. I'm very careful with what I allow 3rd parties to access but I can see a lot of users blindly accepting (like they did for this personality quiz that leaked all this Facebook info in the first place).