4 stars, because it crashes my browser. I have many youtube open sites (that i plan to watch some time in the future ofc) and after enabling this add-on my browser starts to use a lot of memory and crashes. I guess it tries to change translations in all opened youtube pages :|
The Add-On refreshes all youtube tabs on first install. It only happens once. This is needed because any tab loaded BEFORE the Add-On installation won't be detected by it.
