How do I uninstall Facebook's Unfriend Finder?

[MrtyZao]

I recently discovered this "Unfriend Finder" on Facebook that lets you know when someone unfriends you, with the message "Oh no! You've been unfriended by X."

The strange thing is that I have no recollection of installing it. Whichever way it was installed, though, I want it uninstalled. It's really annoying, and if someone unfriends me, I would rather not know.

I don't know where to start. Can anyone help me?
My apologies. It's "FriendsChecker", not "Unfriend Finder."

[Nicholas]

You can uninstall unfriend finder by removing that application from the manage applications settings.

[Herman]

When you notice your number of Facebook friends is decreasing, finding out who deleted you as a friend isn't easy. Through Facebook, the only way is to inventory your friends to determine who is missing -- if you have hundreds of Facebook friends, as many people do, it's extremely difficult to find who is missing. Grease Monkey has a free add-on that can help, although it only works in the Firefox, Google Chrome, Safari and Opera Web browsers.