Comment Network effect. (Score 1) 260
It's called the network effect: the benefits of all going to one single place outweigh the costs. Same as for going to the supermarket, using MS Office, speaking the same language... Facebook is mainly a blank slate, you put on it what you want (subdivided between audiences if you want) and link with whomever you want. Plus I'm not sure what the cost of going to FB is ? I don't do social networking, but if I did, I'd go to Facebook. Why bother with anything else when it's free, everybody's there, and there doesn't seem to be anything better around (G+ is a disgrace, the last few times I checked my "home" was mostly hangouts logs, which you can't turn off ?)