for the people that keep saying this is working now its not. this was once my favorite adon but after the update its crap. ive reinstalled it because the reviews said it was fixed. ive tried it on Firefox 58.02 and crome 64.0.3282.186. ive also tried it on 3 different laptops all with same results. it blocks some things but not all. mostly keywords fail. i get tired of getting rap music videos all the time, i rather put a pistil in my mouth then listen to that crap. or sports i get a lot of, i hate sports with a passion but here it is all over my page with flying colors no matter if i block channels or keywords or wildcards. i finally just gave up on this and youtube all together.