Rated 2 out of 5 stars
it also ads an ad frame...This review is for a previous version of the add-on (1.0.1).
We add a little add to finance our server.
If you want a usefull and working Dislike button for Facebook, it's the way to have it.
But if you dislike ads, you can download Adblock+, a very usefull addon. ;)