It's so bad, it blocks it's own addon site because there is the word porn in it, but doesn't work um xnxx at all, blocks sites not even far related to porn, nor close related, you can't deactivate it so it keeps making your browsing experience a hell on net. Are you into being frustrated all the time? are you into being angry all the time? if yes, than this addon is for you! it has 3.9 stars, but if I could take stars away from it, I'd do without any doubt. Never seen an addon more useless than this one, really. And I've seen some really bad ones, but nothing as bad and useless as this one.