Superb extension! On Linux (FireFox), the blocking is instant and invisible. On Windows (Edge and Chrome), there is a millisecond of ads before SponsorBlock kicks in, but even so, it makes such a huge difference. Thank you so much!

Demands you to tediously preview the sponsored segment with no option to disable this. I use quick hotkeys to quickly submit segments without getting in the way of my viewing experience. Now, I have an annoying popup demanding me to test if I did a good enough job. I use the ", and ." keys to make the segments frame perfect, and now, you want to waste my time even more, with the audacity to not even create a setting for this? I guess my volunteer work is over. Goodbye.

Makes youtube tolerable. Thank you everyone who submit sponsor data.

The extension started to freeze after rewinding the video.