I may be way out here but, it's been mentioned that the data facebook holds that is publicly available could be used and mined to target certain groups of peopl

I may be way out here but, it's been mentioned that the data facebook holds that is publicly available could be used and mined to target certain groups of people... Am I way out here in mentioning historical organisations that also stored masses of data on a population like the stasi (maybe extreme)? I just find it extremely uncomfortable that people are so blasé about what they share on facebook. What worries me more is that I dont think people are ignorant of the privacy settings. Amongst my friends that do use it, they know, they just dont really care, purely because as some people have said it takes maintenance, makes it more difficult to connect with people or makes it impossible to be connected with... I just find this whole culture of sharing intimate details with a) facebook and b) with each other, that we never really shared previously to be disturbing and the organisations that encourage this to be sinister.