Translate - thanks to Fencer,
MapIt - maps any highlighted address to mapquest.com
BugMeNot - if you don't know what that is, check out bugmenot.com website. That's a database of login/passwords for many websites that require free registration.
Also, i found that you can add your favorite search engine to that list in the right top corner. Good for people who want to have other than enlgish search.
I still think it's a little slower than IE if you hit some very slow server on the other end of the world. IE loads picture faster. But extensions functionality is awesome.
(ocultar) Si de repente el sitio se muestra en un lenguaje desconocido, tan sólo pincha con el ratón sobre la bandera de tu idioma para restablecerlo. (pauloaguia) (mostrar todos los consejos)