While I wouldn't dismiss the chance that some of these people are fakes I would like to point out that despite being a techie (if not because of it?) I barely use Facebook anymore and if I hadn't been registered for a long time my Facebook profile would also be pretty barren. I also always had a policy of only "friending" people I know personally and privately. The only purpose of Facebook for me is keeping up with those friends and I rarely post anything and rarely do it publicly. I doubt I'm the only one using Facebook this way.