Firemint has launched a dedicated Facebook app for its iPhone game Real Racing.

The app links your Facebook account with your account on Firemint's Cloudcell community, letting you see the current ranking of any of your Facebook friends who are playing the game.

(Well, any who've linked those two accounts too).

It's the latest nifty example of an iPhone developer linking their game to online social networks - another example would be publishers like ngmoco and Tapulous including Twitter bragging features in their games.

You can sign up to the Real Racing Facebook app by clicking here.