What are some useful stratergies for preserving privacy when using the internet?

There are many useful ways of perserving privacy over the internet. If you follow the link below you will find some stratergies that can help you to maintain privacy when using the net.

http://www.google.com.au/search?hl=en&safe=active&sa=X&oi=spell&resnum=0&ct=result&cd=1&q=what+are+some+useful+strategies+when+preserving+privacy+over+the+internet%3F&spell=1