Comment 6 for bug 239575

Hmm, not to be argumentative, but it seems to me that there are a series of Firefox extensions included in Ubuntu. For example: https://launchpad.net/ubuntu/+source/adblock-plus

But maybe what you mean is that packages in the Universe repository are not considered to be "in Ubuntu."

Like I said before, I only opened this bug because I thought I was supposed to do so when adding Zotero here:
https://wiki.ubuntu.com/MozillaTeam/Firefox3Extensions

Actually, Zotero doesn't need any packaging to be used in Ubuntu. Users can get everything they need from the Zotero website. So, sorry to have wasted anyone's time if I have.