I’ve got an idea for Facebook. They could offer Facebook Premium. For $10 a month, people who really love Facebook (and can afford it), could see no ads. Maybe some special features too. If 10% percent of Facebook signed up, that’s $1B a month in revenue. Not too shabby.
The clue of this story: Facebook earns more than $10 per month on people who really love Facebook. If they want to earn more, the gains are in upgrading the moderate users. Facebook is no Twitter.