Facebook turned 6 on February 2nd and there are some pretty amazing statistics on what it's become. Read "Facebook Turns 6, Gets Billing as Top News Reader" from eWeek.
And From Econsultancy: 20 Mind-Blowing Social Media Statistics revisited.
Here's a peek (go to the article to read more):
• Facebook claims that 50% of active users log into the site each day. This would mean at least 175m users every 24 hours… A considerable increase from the previous 120m.
• Twitter now has 75m user accounts, but only around 15m are active users on a regular basis. It’s still a fair increase from the estimated 6-10m global users from a few months ago.
• LinkedIn has over 50m members worldwide. This means an increase of around 1m members month-on-month since July/August last year.
• Facebook currently has in excess of 350 million active users on global basis. Six months ago, this was 250m… meaning around a 40% increase of users in less than half a year.