Age of Typical Facebook Users
Last week, I was on panel discussing the use of social networking sites for lawyers and mentioned that Facebook is most popular among recent college graduates. Taking that one step further, I ran the numbers on my high school's use of Facebook (St Paul Central High School) by graduation year from 2008 back to 1920.
Here is how it breaks down. Click on the image to view larger, more readable versions:
1999 appears to be the first graduating class that was hardcore on Facebook. Of course, it may be a bit earlier among Harvard students, but looking at the HS level, that's where I see the jump.