It's was a really great add-on but it needs to be updated for the new YouTube. I doesn't work at all now.

Great

Best thing since invention of you tube

Big thanks for a solution to a problem that shouldn't exist!!

Works wonders on the desktop version but unavailable on the mobile version, otherwise a 5/5 add-on.

very well written :)

omg I just found this a couple days ago and it is the freaking BEST!! I love my youtube music playlist as I work from home and I was running to restart it every 40 min for hours...no more! thank you so much! huge gratitude!

This works fine on desktop Firefox, but it doesn't work on the Android version of Firefox.

Used to be able to get around the pesky confirmation until 2 days ago when it stopped working completely, earlier it was an awesome addon, but atm it's not doing anything, probably due to some update on youtubes end.
EDIT: Been using YuoTube NonStop for about 5 months, and worked flawlessly until now, so im pretty sure YouTube updated something to make sure YouTube NonStop no longer works.
EDIT2: Now it sometimes work, and sometimes not, quite confusing.
EDIT3: Now it's back to working every time, seems like the days it wasn't working was when Youtube was rolling out some new updates like how you now can preview a vid by merely hovering over it.

Autopauze still happens in fullscreen-mode