I'm used to visiting the official Mozilla add-ons site to grab my Firefox extensions, but there's a new option in town for Facebook app-aholics. It's called Rock Your Firefox, and it accomplishes nearly the same thing as does the Mozilla add-ons site, but in a simple Facebook application. Its "killer app" is that it keeps track of what themes and extensions your friends have downloaded and recommend--a process that usually requires nosing around their browsers.
Each add-on has its own landing page, along with a list of people who recommend the application. You can sort the list by popularity, genre, or type. Any add-ons you've marked as a favorite will also show up in a small box on your profile for others to see. I'd like to see Mozilla build a tool that could figure out the extensions you've already installed, to skip some of the bookmarking work one must go through.
Part of me also wonders if this application is simply a spin-off for networking features we'll be seeing in Mozilla's Coop. While the Mozilla add-ons site has offered a semblance of social networking since its re-launch earlier this year, integrating it into Facebook seems the next logical step--and a simple way to boost add-on adoption. The only downer is having to restart your browser every time you install an add-on--which is obviously more a shortcoming of Firefox than of Facebook.
On a side note, for all the disco Web swag hunters out there, if you install this application before midnight tomorrow (PST), you have the chance to win one of 20 "Rock Your Firefox" T-shirts.