It seems like only yesterday that Facebook was slipping past MySpace in terms of global monthly traffic, and yet the popular social networking site is now close to breaking another milestone. According to statistics from ComScore, Facebook is now pulling in nearly twice as many unique visitors worldwide as its News Corp-owned rival, with 222 million people visiting the site compared to 125 million for MySpace.

MySpace still has a notable edge in the advertising race, though. The now second largest social networking site in the world still dominates in terms of U.S. audience, where the bulk of online advertising revenues reside, and claims their international revenue is up 30 percent year over year. However, with Facebook showing a 10.8 percent month over month growth rate, it is probably just a matter of time before they overtake MySpace as the largest U.S. social network too – just how well they can monetize this remains to be seen.