Tired of having the stop button taking up too much room in Firefox?  Well, you could remove it from the interface all together or hide it, until you need it.  The Smart Stop/Reload extension for Firefox will combine your stop and reload buttons into one.
This is to save you toolbar space, plain and simple.  [...]

By design, Firefox is pretty easy to customize as far as the toolbars on the top go. You just have to right click on some empty space up there, then choose “Customize”. From there you can drag things off the Firefox toolbars or add them. Two options are not so easily edited [...]

If you are one of those people who has the bad habit of installing every extension I mention, you might run into a few screen real estate problems. The basic rule you have to remember is you should at least be able to see the Web page you are at. Toolbars and addons [...]