In theory it sounds like a good idea, but imagine a scenario where your bank needs to confirm your identity and they outsource this task to a 3rd party that has incorrect data about you (actually happened to me) and when you provide the correct information they tell you it's incorrect and conclude you are not who you say you are. In my particular case they just had old data that was simply inaccurate. Is it unlikely that 3rd party would buy data from Facebook or some entity that obtained the inaccurate data from Facebook? I don't know but I think you see my point. Incorrect data that was inadvertently connected to you could potentially come back to cause you frustration in the future. That said, I don't necessarily disagree with what you're doing and hope Facebook is soon replaced by P2P software.