Rated 5 out of 5 stars

Great ! Thank you !

What about an add-on like that to resize URL bar (the visible part of URL) ?

This review is for a previous version of the add-on (1.4.2). 

Well...

There is an addon that kind of does that, but it's not supported anymore and I don't know if it works for Firefox 3. I am looking into taking over development for that, so I'll know more later. Contact me via the SBA homepage for more info. Thanks! -DA