I've been playing around with Facebook's API and came up with a couple of Facebook Applications:
First, "
Power Score" is a measure of your popularity and activity on Facebook. It currently has over 650 users and is growing steadily! Check it out and it only takes a second.
Second, "
HaloCharts" which is an extention of one of my websites,
http://halocharts.com. Basically, it adds a dynamically updated Halo 3 Stat signature to your Facebook profile page. It gets regenerated every night and shows off some of the most important Halo 3 multiplayer stats.
I've got some more in the works!