One of my favorite Firefox extensions is an old one that is no longer maintained but which I can still coax into the latest versions of Firefox – copyurlplus:
The Copy URL+ extension enables you to copy to the clipboard the current document's address along with additional information such as the document's title, the current selection or both.
I use Nightly Tester Tools extension to force compatibility of copyurlplus with FF:
NTT provides useful tools for testers trying to use extensions that claim to be incompatible with the nightly builds.
Peter Murray | 16-Jan-09 at 5:53 am | Permalink
Hear, hear! Copy URL+ is one of the extensions that I carry along with me to new Firefox versions as well. Particularly under MacOSX, where as a Carbon-based application Firefox doesn't play nicely with others (such as the mail program).