You know, I would hope that people in general would have understood that Facebook is free for a reason when they signed up. You need to keep your defenses up just because of the nature of their business. They sell ads, ok? With a network so large you need to expect that “big players” are going to utilize it for their own ends.
So what’s the big surprise about privacy atm? Come on. You’re posting about your entire life. They own that data. You’re stupid if you think that was never the case.