I've always thought it would be cool if something like this existed, and this addon has lived up to everything I'd always wanted it to be! So far it's helped me skip 510 sponsor/promotion segments total, and I've helped others skip 357!

There are public stats for how many segments have been submitted, and how much total time has been skipped (so far, over 2.8 million submissions and 407 years "saved"), which makes it satisfying to submit your own skips (I now see an unskipped sponsorship as an opportunity to contribute rather than an annoyance), as you can always click the icon to see your own personal stats.

Even if you don't care about submitting stuff yourself, this system gets other people to care, which makes the experience better for everyone. It also seems there's adequate moderation in place to prevent pointless skips, as I've yet to see a single video containing fraudulent skips. You can even "revise" skips submitted by others if you feel like it.

Wonderful addon, have already recommended to friends.