Thinking about this some more the part that drives me crazy is this: Facebook makes $4 per user. The users are customers. That just doesn't follow. The adverti

Thinking about this some more the part that drives me crazy is this: Facebook makes $4 per user. The users are customers. That just doesn't follow. The advertisers are the customers. They happen to pay $4 for every person right now. If the advertisers dry up - because say, they go out of business or decide facebook isn't great value - then the facebook users are 'worth' a lot less.