Online researcher Information Is Beautiful has released data from Google Ad Planner highlighting gender breakdown on popular social media sites.  Reported by FastCompany, the data shows women outnumber men on all web sites where activity is purely social networking, while sites with other purposes such as YouTube and Linked-In are split down the middle.

Women edge out men on some of the most popular sites, for instance on Facebook and Twitter where 57 percent of users are female.  The disparity grows on MySpace, which reported 64 percent female users.  The only site where men outnumber women is, at 64 percent male.

Read more and access the full chart at FastCompany {link no longer active}.