It doesn't work for me on YouTube. (At this moment.)

I can't even think of using a browser without this extension and HTTPS Everywhere installed.

To all you haters that think they (uBlock Origin) are spying on you, I recommend you read https://github.com/gorhill/uBlock/wiki/Permissions

essential!

Wow, this is beyond fantastic. It is easy to set up uBO for the mostly computer illiterate, but in the hands of a pro it can become even more powerful. Things like cosmetic filtering with advanced rules make it possible to programmatically block elements on sites that randomize IDs or classes, so anything is in reach. Thanks.

Should be preinstalled