FBuntu is an application that integrates Facebook into the Ubuntu Messaging Menu and displays NotifyOSD notifications for each new Facebook notification you receive.
The application is a bit difficult to set up but I've tried to make it easier so all you have to do is copy/paste a few commands:
1. Install BZR and get FBuntu using the commands below:
sudo apt-get install bzr cd bzr branch lp:fbuntu
2. Click THIS link to authorize FBuntu with Facebook. After authorizing the application, copy the link to which it redirects and paste it into the url="" field (it's on line 24) in the auth.py.example file (you'll find it in the fbuntu folder in your home directory).
3. Use the commands below to copy the facebook.png file into the ~/.icons folder, rename auth.py.example to auth.py and run Fbuntu:
cd mkdir -p ~/.icons cp fbuntu/facebook.png ~/.icons/ mv fbuntu/auth.py.example fbuntu/auth.py python ~/fbuntu/fbuntu.py
The last command above should start FBuntu.
For enabling inbox notifications, see the README file. In my test, I got a lot of notifications after enabling this so it may be better to leave this off.
If you want to report a bug or contribute code, you can find FBuntu @ Launchpad.
Thanks to Greg for the tip!