Thanks to Joe Trippi’s blog, I found some interesting data about the gender composition of social networking sites.
The research data and chart come from Royal Pingdom, which used site demographics data for the United States gathered from Google’s Ad Planner service.
The study shows that many sites are heavily tilted towards one gender demographic or the other. A few, like LinkedIn and Delicious, are more gender neutral.
For marketers trying to match up their target audience’s gender profile with different social networking sites, the study provides a good starting place for segmentation analysis.
Some of the specific findings from Royal Pingdom –
* 84% (16 out of 19) of the sites have more female than male users.
* The social news sites Digg, Reddit and Slashdot have significantly more male users than female. The standout here is Slashdot which takes male geekdom to new heights with 82% male users. 
* If we hadn’t included the three social news sites, all of the sites would have had more females than males.
* Twitter and Facebook have almost the same male-female ratio; Twitter with 59% female users and Facebook with 57%.
* The most female-dominated site? Bebo (66% female users), closely followed by MySpace and Classmates.com (64%).
* The average ratio of all 19 sites was 47% male, 53% female.
