Am I my brother's keeper?

Have you ever had your computer jacked by adware, trojans, spyware, etc.? I am so paranoid about this that I scan my computer at least twice a week with AdAware and Spybot R&D. This article on c|net introduced me to a new anti-spyware program called Online-Armor. Another anti-spyware software that is thorough is WebRoot SpySweeper. Both of these cost $$$, but I think that is a small price to pay to avoid losing your privacy because of a malicious download driveby. FYI, no one is ever 100% secure on the internet these days.