Rated 5 out of 5 stars
Although this add-on isn't keeping up with the newest Firefox releases, I am sticking with Firefox 14 just for this add-on. Thank you John Mellor (Jomel) and PikachuEXE!This review is for a previous version of the add-on (0.9.9.8.1-signed).
I think you can use it with Firefox 16
But it's fine staying at older Firefox
Firefox 17 breaks this addon quite a lot and requires at least a few more weeks to fix them all
Not to mention the time to get approved
But you can monitor the Google Group or Google Plus Page if you want to use beta versions