After months of waiting, Facebook IM has finally arrived on the social networking scene and is situated to become a must-use application for its users. But, just how well does Facebook perform versus its social competitor, MySpaceIM?

Check out our head-to-head preview of Facebook IM and then, decide for yourself!

Bonus for Digsby Users: Just announced, Digsby is the first third-party IM to feature support for FacebookIM. Now, rather than signing in to Facebook, Digsby users can use their favorite client to access all their Facebook friends! Sweet!