Here is the video from Jason Bailey of Millnic Media that illustrate the process of Monetizing Facebook, though it does not have javascript embed code to facilitate adsense for content but facebook application have maximum prospect for developers those interested to use affiliate links and monetize it to earn revenues.

Facebook provides good opportunity which will see rising activity within the blogosphere for the coming months. Facebook’s growth is expected to someday go beyond that of MySpace itself. For developers and businesses alike, this is an opportunity that is well worth look at. Watch this presentation on youtube.
Monetizing Facebook Applications - Jason Bailey

{ http://www.youtube.com/watch?v=t6vjKo6Lzg4 }