very usefull Rated 5 out of 5 stars

Added this toolbar to the blank space in the menubar, and use it very much. Missing Firefox 3 compatibility was the reason I didn't update firefox. So I have updated it myself.
http://rapidshare.de/files/41334128/galculator_toolbar_version_-6.1-fx3.xpi.html
Also fixed functions which opened a new (blank) window, they will use a new tab instead now with correct data.

FAVORITE EXTENSION Rated 4 out of 5 stars

I love this extension! It's extremely light AND functional. It replaced a lot of heavy extensions like the Growwe toolbar.
ONE COMPLAINT: needs CUSTOMIZATION on what prefixes use what search engines, including ability to use two letter or even NUMBER prefixes