Rated 5 out of 5 stars

le Bagok701 ar Márta 7, 2010 · buan-nasc

Works in 3.6 some visual bugs (changes addon download background)
For those of you who don't care to login to get the Leet Key 1.4.3 or other versions go here https://addons.mozilla.org/en-US/firefox/addons/versions/770