Will mess up the page layout, For example, this page http://nesdev.com/2C02%20technical%20reference.TXT translated into Chinese

Tem alguns bugs, não traduz algumas partes as vezes, mas funciona muito bem e é uma ferramenta muito útil

Works decently, Wish the source code was available to see what it actually does.
The extension needs permission to access all you websites information, including what you type, should be allow to read only what's selected to translate.