Do not believe the reviews. This add on no longer works on the updated youtube UI.

It works! Man, I was missing this feature. Thank you so much, Dmitry!

Er jeg den eneste, der har lagt mærke til, at de bruger YooMoney til donationer, som er en Russisk service med Hovedkontor i Moskva?! #PutinMustGo

I do not care - it is still based in Mainland Russia.
My point is to suffocate Russia, until they are on their knees, begging for forgiveness.

I have to address the fact, that you have no idea, where I come from.
My country is self-sufficent when it comes to oil. We do not import oil from anyone.

Great add-on. We all know why the dislikes were really removed. Power to the people! One quick tiny suggestion: code in a space so the dislikes will show like this " n" instead of "n". Currently there is no space after the icon and before the count like there is with Youtube's like button.

После последнего обновления ютуба начала криво работать. То не показывает лайки, то самой шкалы нет. Приходиться перезагружать страницу, но все ранво помогает это редко, а после последней обновы, самого браузера, из-за этого расширения начал тормозить сам фаерфокс.

It works sometimes but isn't very accurate. It shows one total of likes and dislikes, then it switches to a completely different total after Youtube is completely loaded.

You can't blame the creators of this app though since they did their best, but Google consists of a sly bunch of pervs that need to know everything you do, every where you go and when you took your last dump, and will do anything to sabotage a program even if they don't have the right to interfere with other peoples property.

I have the similar issues with my Android phone. If I try to use Firefox instead of their spyware chrome app, my phone starts acting up and after a few days, it takes forever for Firefox to open, and the app size goes for 275 mb to over 700 mb, causing my phone to run slow as I get constant notification that my phone is running our of storage.

Hopefully Elon Musk will buy woke Google one day and put Google out of it's misery, but until then, you'll be sheep controlled by big brother Google every time you use any of their products.