great

Easy to use, it's simply the best one!

Very good and easy to use

This is an excellent add-on for YT. It does exactly what its name says. I makes YT more like a personal player than an online video portal.

Great Add-ons. Never crashed and I use it everyday

I use it all the time and it is just very conveniant. Thanks guys.

yes, great, only top quality here.

O que mais gosto nesta extensão é o auto-replay, que me poupa tempo e trabalho de fazê-lo pelo próprio Youtube. Em segundo o cinema mode. Os outros são ótimos, mas não os uso frequentemente. Ótima extensão para o Firefox!

Only problem I have is when I try to scroll down and lower the volume accidentally

It's a must.

Powerful, easy to use, crazy amount of settings, active developers who care about their plugin, contains an ad blocker (with white list for creators you want to support), and best of all, it's free! If you watch anything on YouTube, this is a must have. You will *not* regret installing it.

Very simple to use, unobtrusive tool that does exactly what it is named for, enhancing YouTube.