I read your post and it sounds like you're affirming my point, so I'm confused. Only counter-argument I see to "so what" is the Manning link with their chat log, but... Having a rogue actor with access to your personal data is a problem, but then the actor is a criminal, and Manning would be in jail until 2045 had Obama not granted executive clemency. So, it's still not a concern to me. The only vulnerability I can think of is having the data stolen through hacking, for which I can only hope Facebook and/or the NSA are not vulnerable to non-governmental agencies in that regard; if a foreign government agency steals all our data from Facebook, I have less of a problem with the fact that Facebook collected our data than the fact that this is now an international issue between governments.