There are a lot of really stupid/trolly/fake videos on YouTube. I'd like to blacklist them forever when I see them, so I don't accidentally click on them in the future, and maybe block the uploader, too, to avoid others. Is there any way to do this? Greasemonkey script? Adblock? Firefox extension? Proxy site for Youtube?
Something like BlockSite would be good, in that it disables hyperlinks to specific URLs, but ideally it would hide everything related to those videos, thumbnails, etc., not just disable the links. Also last time I tried it, BlockSite was buggy.