Facebook Platform only launched for mobile in October 2011, but already it's connected more than 60 million visitors from Facebook's mobile app to other mobile apps and games each month.

That's from a total of 425 million mobile Facebook users, who in January 2012, accounted for 320 million sessions on mobile apps and games.

Rules of engagement

It's no surprise then that Facebook claims its platform can benefit developers who might otherwise struggle to get their apps discovered in the various app stores, since exposure is socially driven rather than dependent on rankings.

For instance, Facebook encourages users to re-engage with an app when their friends use it, share activity, or compete in games.

Wooga's Diamond Dash is highlighted as a specific example of a game which has benefited from integration with Facebook Platform.

Its iOS version sees more than 1.9 millions monthly visitors from Facebook, and daily traffic sent from Facebook has grown by a factor of three.

[source: Facebook Developers]