I agree with the Admin; there is no "control" panel here, so to speak, so any "data" would be inaccurate. Doesn't necessarily quiet the questions, though, understandably.
I too have wondered this, though....for me it's been, "What if someone on here I'm talking to knows me or finds out they know me?" Which is why I don't share a lot of specific details (location, age, etc.). I've always had natural paranoia of some kind. Anonymity works for me....it's a reassurance.