[Web Applications](http://webapps.stackexchange.com/) do not take questions about Firefox extensions, for the obvious reason that they're not about applications related to the web. It's about Web Applications, i.e. server-side.

Firefox is a desktop/client app rather than a server app.

They don't like them on Web Apps: 

- [Reason for my question better suitable to superuser than here?](http://meta.webapps.stackexchange.com/questions/804/reason-for-my-question-better-suitable-to-superuser-than-here)
- [colorzilla extension doesn't work in Firefox 12, Any good alternatives?](http://webapps.stackexchange.com/questions/27299/colorzilla-extension-doesnt-work-in-firefox-12-any-good-alternatives)

And they're getting closed on Super User too:

- http://superuser.com/questions/386757/any-alternative-to-universal-uploader-fireuploader-for-firefox