How to speed up firefox?

Hey. Surfing my favorite site, zixpk, designer of this website layout. I greatly appreciate his work and his design as they are like an inspiration to my design. Last but not least, i've stumbled upon a very interesting topic which you guys might check it out. How to speed up firefox -

http://www.zixpk.com/2009/06/firefox-tweaks-that-will-increase-your.html

I really do notice the speed difference, however i'm not liable to any damage caused to your computer.