Facebook open graph API and new apps

After facebook timeline we now have apps on the timeline, which leverage open graph API to post actions that you performed on other websites to your profile. Here is a complete list of apps (60) that are participating in the facebook timeline capability.

“Once you’ve added an app, you can begin updating your timeline with your activities as they happen.”

I personally have 6 apps that I have used / authorized and most of them post to facebook (twitter, wordpress, etc.)

I dont really use any of the other apps. Dont see a need yet. But this might just make me change my mind. (Deep sarcasm).

Do you use any apps? I am curious which apps are really used by other entrepreneurs.