Rated 4 out of 5 stars

It's really useful in what it does, but sometimes the performance makes everything go wrong especially when i open more than one video.
Also there's somethig missing & it's very important in my opinion: if firefox are closed , then all the download queue are lost, & this is a stupid thing to be in a download utility.
otherwise, this tool is very useful.

This review is for a previous version of the add-on (3.4).