Rated 5 out of 5 stars

Indispensable!
@John Doe I can only echo the sentiments expressed by @DieHardBoss. Complaining about free software will (and should) get you nowhere...

Doing something about issues (like @coyotelabs) is more in the spirit of things and AFAIK has been the first thing to try when FF gets updated on any/all incompatible addons.

This review is for a previous version of the add-on (0.5.7.5).