Check out the newly published documentation of the Drupal for Facebook project.

This isn't meant to replace the official Drupal for Facebook documentation. Rather, it provides an additional resource for developers adding modules/fb to their own sites.

It's simply put together, using doxygen. I'm a doxygen newbie, so I welcome pointers that make this documentation better.

As future versions of modules/fb are released, you'll be able to find the documentation at
http://www.drupalforfacebook.org/dox/.