[smsm42]

Welcome to the brave new world. You can single out this app but it does not matter - once the data is out there, it's going to be used this way. Most people do not understand participating in social networks means broadcasting your private life to the whole green world. This is a very new thing - you never before had an option to do that even if you wanted. So there are no common sense rules about it, and mothers can't teach their children to behave right on Facebook - because nobody has enough experience with that stuff yet. And unfortunately, I foresee a number of creepy and outright evil things happening before this common sense emerges and becomes part of the collective wisdom. It's much bigger than any single app, that app is only a tiny symptom.