Rated 5 out of 5 stars
Very useful! I was using Gb2Big, but switched over a long time ago based on recommendations. This has much more functions like auto convert, & convert clipboard text.
The only thing with auto convert however, is that it doesn't differentiate Chinese characters from Japanese Kanji. So it's something I have to be conscious of when viewing Japanese web pages.
But this has many shortcut icons to remove the filter/conversion, etc. So this still gets a thumbs up from me! Please do keep it up ^.^ (currently doesn't work with FF3.6 beta 5 in case anyone is thinking of making the jump).