Works, definitely works.
Without this little addon listening to music on youtube for extended periods of time would be an absolute nightmare.
However, does have some small problems.

1. Sometimes doesn't work for whatever reason, rarely though.
2. While it does stop youtube confirmation popup from bothering you every 5 seconds, it does not put the video on loop, so after a while the video will stop playing (since youtube's integrated loop function only loops for a couple of times at most and then stops.) Therefore i wish this addon could also click on the 'play' button automatically whenever it detects that the playback had stopped. That'd be great.

I love this addon. Recently, it has not been working properly as it used to. Need update.

parfait
merci

it works well for me

Remarche impeccable après mise à jour, merci bien, c'est une petite appli qui fait partie des indispensables contre la volonté de youtube de nous faire payer notre impudence de vouloir conserver la gratuité de ses services.

Recently, it has not been working properly as it used to. Need update.

Stopped working.

Nope, it doesn't work.