Underground And Other Stuff

Many Firefox users might not be aware of the fact that the browser has a lot more configurable options than is easily available in the GUI. To access them, type "about:config" into the location bar and press Enter. You will then see a long list of variables, whether they are default or user modified, and their current value. Now the inevitable question is obviously "What the hell does all that gibberish do?". No fear, my friend. Head over to the Mozillazine knowledge base and learn all about it.
Happy tweaking!