Rated 4 out of 5 stars

I have been using it for years, usually works fine. However, bear in mind that it will slow down FF and, for power users, it may make it crash. However, a normal user shouldn't have a problem. I have tried different video downloaders and they don't come even close (except for Video Myxa, perhaps, more light weight and similar -if not so sharp- features). If you could make a lite version not slowing down FF considerably, I'd give you 5 stars, definitely ;D

This review is for a previous version of the add-on (4.9.8.1-signed).  This user has other reviews of this add-on.