This extension no longer works at all. Look for BlockTube! That's kept current and you can block any keywords you want!
https://addons.mozilla.org/en-US/firefox/addon/blocktube/
In BlockTube settings, simply put every word on a separate line, and it will block every video with that word in the title. I had to search for an hour to find BlockTube, but it was totally worth it!!!

Let the developers of Video Blocker know that it no longer works, and maybe they will try to fix it.

Расширение не работает! Меню по правой кнопке появляется, но блокировки нет.

Не работает в новой версии ютуба уже как ГОД блять!!

非表示にしても変化がない。入れる意味のないゴミ。

Did not work :(

Works great on Chrome but I can't seem to import my blocklist.

Doesn't work with the new YouTube setup.

Doesn't work. Tried blocking by name, username, and keyword, and it still showed up in search results.

It does not block the channels I tell it to block.

neverwork

It doesn't work at all.

This WAS a 5 star extension.
But for some reason, the author has never updated it to work with NEW YOUTUBE. It ONLY works with the 'OLD YOUTUBE' layout - which is being phased out very soon according to the annoying popup messages on the YT homepage.

If the dev is able to, I wish he would state this on the Video Blocker description, and why he will not update it.

Doesn't work on firefox sadly. But i found an other addon called " BlockTube " by amitbl who does.
So, it's all good now.

No sirve

It doesn't work

Not working anymore

Funktioniert nicht