Useful script, but has to be coupled with this extension: https://chrome.google.com/webstore/detail/hide-youtube-watched-vide/ekcdnnkolgkikkhbbjcabcjdibfbafbl h

Useful script, but has to be coupled with this extension: https://chrome.google.com/webstore/detail/hide-youtube-watched-vide/ekcdnnkolgkikkhbbjcabcjdibfbafbl https://chrome.google.com/webstore/detail/hide-youtube-watch... It hides all the videos you've already watched from appearing in the homepage or searches or related.