Rated 5 out of 5 stars
It's really a shame that this extension is no longer supported. I guess it's because more people don't understand what an awesome and powerful tool this extension really is, and how it can enhance your browsing experience.
I'm delighted that it works with FF 3.0 (if you hack it), but it is in need of additional development work beyond a simple compatibility upgrade. (Some minor bugs do exist.)
Regardless, I will continue to hack it and use it with each new version of FF until it is either supported again, or until it becomes completely incompatible with FF.
Thanks for reading!