Works great again Rated 5 out of 5 stars

I recently had the error message "TypeError: this.browser is null" in Firefox 4.0. But now everything is back to normal.

Btw (@oaken & @all): serious "highlighter junkies" should try this Greasemonkey script:
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http://www.donationcoder.com/forum/index.php?topic=24496.msg231311#msg231311
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It has automatic keyword extraction & highlighting as well as automatic search term highlighting.

This review is for a previous version of the add-on (1.5.1-signed).