Keylogger?

I'm not sure if this is the right section, but anyway, here I go.

Is there a totally free (as in no trial period, no cost) keylogger that I can use to get into my brother's Facebook. He was being an ass so I need cyber revenge.

Oh, and it should be hidden from the task tray.

Just use Dark comet and rat yourself alot better ROFL

Have fun lol xD