I think I have a pretty optimized Firefox setup. Personally I don’t think anybody needs more than two toolbars in Firefox at all times. How can you cut down on the clutter and keep everything accessible with just a few clicks here and there?
1. Shrink Your Main Menu Bar!
Install the Tiny Menu extension to shrink your main menu navigation. This extension replace the standard menu bar with a tiny menu popup.
2. Toss Out the Firefox Throbber!
Ditch the throbber in the upper right hand corner. Each tab has a built in throbber to let you know when a Web page is loading, this main one is not needed anymore. Get rid of it and give yourself some more space.
3. Use Small Icons to Save Space!
Use small icons on your toolbars. To do that, you can right click on the navigation toolbar and click “Customize”. At the bottom of that popup you should see a check mark box for “Use Small Icons”. While you are there you can drag away or add any items you think you might need or never use at all. Personally, I have back, forward, refresh, stop, home, and downloads there.
Any other suggestions for a more organized and clutter free toolbar?

Merge MySpace and Firefox
Do you want to bring together the best of MySpace and Firefox? Sure Firefox is sleek and nice and MySpace is about as pretty as that Hungarian transfer student that wanted to take you to your prom. That doesn’t mean they can not get along though. The best tool to gain access to MySpace that I have ever found is the unofficial MySpace Toolbar.
One new feature they have added is notifications when important things happen. You know, like when that friend of yours posts the 101 reasons why you shouldn’t use your toes to pick your nose.. or something to that effect.
+ Download and Install the Unofficial MySpace Toolbar for Firefox!