An excellent article published by “Computerworld”. Preston Gralla reveals how to tweak, hack and bend Firefox to your will.
Firefox is infinitely customizable, via editing a text file called userChrome.css, making changes via a command called about:config, and using free add-ons to extend the features of the browser. […] In this article, with those techniques and others, I’ll show you 15 great Firefox tricks, including how to build your own Firefox search engine, how to speed up your browsing, how to hack the interface and plenty more.
The article is available here.