webapps do not take firefox extension questions, for the obvious reason that it's 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 webapps http://meta.webapps.stackexchange.com/questions/804/reason-for-my-question-better-suitable-to-superuser-than-here
And they're getting closed on superuser too
Any alternative to Universal Uploader (fireuploader) for Firefox?