I think computer privacy is important for many of us.
I was under the impression that clearing cookies and internet sites in the browser was sufficient. That is not the case, a file called index.dat outside of Windows, in DOS, keeps track of all your internet activity and cannot be easily deleted. There are programs on the internet that can clear these files.
I have installed a recommended free program from
www.pctools.com called "privacy guardian" that is supposed to clean all internet records from your computer.
Also, I keep all images downloaded from the internet on a flash card.
Another thing, Windows media player does not clear all files from the "open" menu. It is necessary to go to: (start, properties,customize,clear) in the classic start menu to remove media records.
Better to be safe than sorry.