Love the add-on! One small request: have you considered adding a separate pause keyboard shortcut where it doesn't bring up the UI at all in full-screen mode? I frequently have to take screenshots (with this add-on) to take a look at a frame without the UI and have to keep deleting the screenshots. I think this would be pretty useful!

very
good

One of the best Youtube add-on available for Firefox.

I have used this add-on for quite a while, I redid my computer and formatted everything, so I had to redownload it. It's actually the second extension I made sure I got. I'm quite happy with how easy it makes doing things I've thought were missing from YouTube for a long time. However, like so many other developers they either don't even realize, or don't care, that in Canada, we speak Canadian English. Canadian English is neither British, nor US English. It may mostly sound the same, but it is actually a three-way mix. Little bits from British, little bits from US, and other bits are entirely Canadian. I'm not a developer, but it cannot be that difficult to add the languages spoken where you plan to market an item. There's always Canadian French, no one ever expects them to speak Parisian French, is it really too much to ask that when I hear or read something that has been marketed in Canada, that I am able to identify with the spoken and/or written word, not as British or US, but as ME. I AM CANADIAN =)