Found a website selling a Facebook clickjacking script here: Hidden Likes

The script uses javascript to make the like button follow your mouse around and uses another javascript function to make it invisible. It's also on a timer so if someone clicks anywhere on your site within the time you specify in the script, it will automatically make them like your site and post it to their wall. Then, after the timer runs down, the invisible like button following your mouse will disappear so that they do not click it again and unlike your site.

If you're web development savvy (you need to know javascript and html) you can pull the script directly from the source of the demo page without buying it pretty easily. I've found it works fine on all browsers except for the newest update on IE9. I haven't been penalized on any sites yet and I'm pulling in ~30-50 likes a day on sites with minimal traffic.

Enjoy