On double-click or selecting and pressing shortcut extension does not react in 50% of cases.
No translation on hover (hover+shortcut).
The biggest design mistake is showing phonetic transcription for TARGET language, which user already knows, not for SOURCE language.
And on several sites several times it was reported, that extension slows down the browser dramatically.

Easy, handy, great extension, i use it everyday.

very good

super TOP -übersetzer DER BESTE

Прекрасное дополнение для работы с англоязычными сайтами.

Удобное приложение, но хотелось бы автоматическое определение языка, когда хочешь перевести что-то из контекстного меню, а так приходится лезь в иконку приложения на панели и переключать.

Esta cool

Really? A european company prefers Brazilian and do not offer Portuguese? Not recommended.

...

perfect web translator,now

Übersetzt gut und ist schnell

Çok Güzel

Wrong overlay on some sites.(window with translation was closed by other elements)

De nuevo en Firefox, esta extensión se me ha hecho indispensable.

it WORKS, NICE PRESENTATION.

but one very very very STUPID FLAW:
the listen-to pronounces it in the language translated to (the language we already speak, useless). it does not read the source (the language being translated from, which we do not understand, but what this feature would be used for)

permissions: also, there is no need to follow our browsing activity. some translators require only one permission: access data on websites we visit.