It's very useful and is also really customizable.

Registered just for give you 5 stars. Sponsorblock is the best thing ever to happen to YouTube extensions, thank you for saving our hours of life!

Super helpful to use alongside an ad blocker. :)

This extension is designed so well that it has allowed the wider YouTube community to dramatically improve the viewing experience. As a paying YouTube Premium member, I understand the need for YouTube to earn enough to maintain the platform. Seperately, I also understand a creator's need to earn enough to make it worth their while to create new content. However, this extension makes it so easy to to dramatically improve the YouTube experience, at least for viewers, that I actually worry about its long-term impact on the body of creators that support it with content. Time will tell.

A really big time-saver, it's amazing and has a lot of cool features