Is it really anonymous?

Yes. Your vote is kept strictly confidential. Vote to your heart's content. But remember, you can only vote once per photo.

How does this voodoo magic work?

MotorVote is a bookmarklet, meaning its a small piece of JavaScript embedded in a URL. It does nothing to your Facebook deep down, but on the surface it changes what you see on your screen. Check out this wikipedia article for more information.

My picture that people voted on isn't flattering.

We abide by all Facebook's privacy settings. Either take that picture down, or bump up your privacy settings and the picture is gone.

When will you support IE?

The app should work in IE, but there are no guarantees.