Extension lister

I'm currently reading the Firefox Hacks book which is so much better than the firefox garage book. One of the extensions listed in the book is infolister which lists all extensions and themes installed in firefox and can publish it to a website. (Which would possibly reduce these firefox extension posts :-) Combined with the Mass Installer extension it looks like you can replicate an install of software from one machine to another easily - this would make it a lot easier for me to keep my machines in synch. Note that I've not tried this yet as the infolister on this machine is very bare - only two extensions but that is because all the extensions that were loaded got wiped when I moved my Firefox profile directory. It would be good if infolister also listed greasemonkey scripts installed - perhaps that will come in the future. The forum discussion is 20+ pages long so I've not had chance to read it yet to see if anyone else has had the same idea.
Update The infolister is merged into Mr Tech's Local Install (but doesn't have the ftp uploader facility) but you do have the ability to copy/paste the output as html, text or bbcode - I've added the html output from my machine in the extended entry.....