Very good, updates & adapts quickly to whatever nonesense youtube keeps trying to do as well as just being a good thing to have on all sites really.

Was working just fine as an Adblocker until a couple of days ago were YouTube sometimes still shows me adds before videos for some reason. Hopefully this will get fixed soon.

My top three add-on when I use Firefox.

Até o momento está bloqueando os avisos e anúncios insuportáveis do Youtube, porém também bloqueou sites de downloads, se não tiver como mudar isso nas configurações, não serve para mim.

seems to be working again on youtube as of 6/26. thank you, developers, for your hard work. sorry i was so harsh in my last review, i was upset at youtube

Works great. If you get two rectangles, one grey one red, you need to do a clean reinstall of firefox.

This is an amazing add-on! It's unobtrusive, it's powerful, and it's damned effective, even at blocking ads on Youtube. It is nicely adjustable as well, letting you block irritating elements on a page.