Somebody's Watching Me
Do Not Track Plus -- just go and download it right now. It's a free browser plugin for all the bigs. Not only does it block companies from tracking your web browsing, it really speeds up your page load times.
Popular Mechanics has nine different trackers on its site, which might explain why it tends to suck so much. Well, not for me, not anymore.
UPDATE: Slate and Daily Caller top the charts with an even dozen apiece. I suspected Drudge would have been one of the worst offenders, but Drudge Report is at a relatively benign four.