Jim, to trendmicro's product, I would add Lavasoft's Adaware for spyware detection and cleaning. Like yourself, I am surprised everytine I run Adaware once or twice a week - in my experience it usually detects 40 - 70 pieces of spyware, including many trackers. I started with the free version and after a year went to the Pro version. In its three forms, it may be reviewed at http://lavasoft.com/