This is a Tampermonkey/Greasemonkey script. When enabled, hover over a YouTube video's thumbnail (the image icon of the video) with your mouse while holding down assigned key.
Shift key = "Not interested", "Recommend less like this" & "Hide"
Alt key = "Don't recommend this channel"
03/08/2024: Updated to new YouTube class names... They just switched the words around for some reason.
02/07/2024: Complete code rewrite that makes it more optimized (imo), customizable, and easy to follow. I'll hopefully work on it as time goes on, but we'll see. I advise using this if this one isn't to your liking.
18/11/2022: Added another "keybind" that should make it future-proof because, for some reason, YouTube likes changing the name of selectors.
25/11/2021: YouTube changed its page structure, so I updated the script. Also add support to hide videos on right side of the video watching page.