YTIDC by Alex C

I use YouTube a lot, and often find myself clicking or middle clicking (which opens up a link in a new tab if you're unaware) videos, queuing up a watch list in different tabs, and then go to watch them and find that I'm instead staring at the "Watching videos with paid product placements, sponsorships & endorsements" page because YouTube introduced a giant "Includes Paid Advertisement" button on the top left of all thumbnails when you hover over them.

This add-on hides that. Right now that's all it does, but as I get more annoyed with things on YouTube, I may add more.