Regular, routine maintenance.
1.Automatic Window updates
(plus checking on my own)
2.Automatic updates on Virus signatures
(also subscribe to cnet tech bullitens about virus activity)
3.Use of a router with hardware firewall
4.Run Adaware & Spybot at least weekly if not more often during heavy surfing activity
5.use of internal firewall (Zonealarm)
6.Sanitary surfing habits
(don't fall for the ''Free'' offers, use disposable email address, don't surf in dangerous waters
7.Don't give out personal information, email address, ect. Review privacy policies-don't like-don't do it

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic