Everybody and their grandmother has done a list of Firefox features you would like to see come to the browser, but what features could you do without?  There is no doubt that fans of Firefox like a light browsing experience, so could Firefox do with a little house cleaning of features not used or loved by many? 
Security Zone Policy Errors – This seems to be more of a problem than most people realize.  From this one blog post, [...]

Are you turned on by a hot girl who can tell you exactly how much data is currently loaded up in that browser of yours? Well, I can’t deliver on the hot girl – but I can give you a cool extension that gives you a lot of useless stats.
The Browser Statistics extension for Firefox will let you know the following:
- data currently loaded (KBytes)
- total data loaded (KBytes/MBytes) since last start of the browser
- number of visited pages
I [...]

We all like reading about useful extensions right? Well, what do we do about all the useless ones?

There are also absolutely uneeded features, developed either for the programming challenge or just for the fun. Here is a sort of anthology of the most unuseful extensions to Mozilla Firefox. Sure theirs authors will love being cited here.

+ Read More About the Useless Firefox Extensions!