Facebook has 750 million users

Facebook is one of the biggest and most important communications technologies of the 21st Century. That is both profound and scary. By Christmas, 1/6th of humanity may be on the social networking site:

One important thing to note: unlike many online services, Facebook’s user count metric actually means something — it’s defined as a user who has logged in within the last 30 days (plenty of sites only report cumulative users, which doesn’t take into account that many people stop using their services).

A year ago the site had about 500 million users. Incredible growth. My Dad, who recently celebrated his 40th wedding anniversary, is now on Facebook. It’s one of the biggest Internet technologies, up there with email and Google.