In case you didn't know, there's money to be made in mobile. Not necessarily by mobile developers like you and me, but most definitely by the app stores that collect their 30% off the top. With Apple posting revenue in the billions from their app store, it's no wonder folks like Amazon and Samsung have entered the app store business as well. Who has been notably absent is Facebook.

Obviously a mobile app store probably isn't something that would make a lot of sense for Facebook, but with Facebook now getting more visits from mobile than desktop, it would only make sense for them to try and capitalize off all that mobile traffic - and it looks like they have found a pretty smart model.

(click 'read more' below to continue)

A couple of people have noticed that the Facebook Developer Toolkit doesn't work on the current release of Windows Phone 7. The primary reason is that it has a dependency on System.Windows.Browser - a library which isn't in the WP7 runtime (Silverlight isn't hosted in a browser on the phone).

I took the source from the Facebook Developer Toolkit and hacked at it until I got it to work on the phone. Here is a quick demo showing it working in the WP7 emulator:

(click 'read more' for more on how this was done..)