Adult Internet users on social networking sites has quadrupled since 2005
It ain't just for the kids anymore.
Here's the latest stats:
* 75% of online adults 18-24 have a profile on a social network site
* 57% of online adults 25-34 have a profile on a social network
* 30% of online adults 35-44 have one
* 19% of online 45 to 54 year olds have a profile
* 10% of online 55 to 64 year olds have a profile
* 7% of online adults 65 and older have a profile