Rated 4 out of 5 stars
Slows the HELL out of my browser(only video sites, i think) so much that youtube videos do not load until several minutes. When I am watching youtube videos and am not downloading anything I disable this addon. NOW TO THE GOOD PART It DOES work very well(even with megavideo which makes me LOVE this add-on) so about a 3.5(or 4) out of 5 :) I just wish it didn't slow youtube down SO much, so that I don't have to disable and re-enable so often, but I can live with that. It'd be cool if they'd fix it though :-\This review is for a previous version of the add-on (4.7).
It does not actually slow down youtube. This is a problem with your firewall.
We have a workaround that will be released in a couple of days.