Simply Astounding Rated 4 out of 5 stars
I starting using this add on when it was released. And now with improvements it has become more useful and astounding..
Being a simple lightweight add on it does not slows down the browser and it works only when needed it also does not hampers the browsing experience.
No replacement for its video downloading capabilities is yet available
Simple add on with great functionality makes this worth and essential for having with Firefox.
PS:- If there would have some integrated download acceleration that would have been an amazing improvement.