Nothing Rated 1 out of 5 stars

I don't think this is compatible with new Firefox. Although I'm not sure, because the browser would not let me download the others... Regardless, I logged-in on Google Adsense page. I don't see anything when I browse my Website.
Right Click, Center Click, and Left Click are not displaying anything different. Very little information regarding what this add-on is supposed to do or how to use it. Therefore, I'm very confused but see nothing added with the installation using the latest Firefox.