Need user data to calculate your Facebook ROI? Check out CheckFacebook.com to see who is on Facebook. This site, although not affiliated with Facebook, tracks and aggregates user data from Facebook's ad creation page. This simple page only does one thing, but it does it well. The map shows the global saturation of Facebook as total users and as the percent of the online population. When you click on the individual country, you will see the total audience and the percent of the world audience. Plus you get pie charts, and who doesn't love pie charts, for a nice PowerPoint presentation, showing country usage by gender and age.
