Free Screensavers
Ben Edelman and Hannah Rosenbaum report that typing the phrase "Free Screensavers" into a search engine is bad news. More than 64 per cent of sites that are linked to this phrase will cause you some trouble, either with spyware or adware.
Other troublesome phrases:
Bearshare
Screensavers
Winmx
Limewire
Download Yahoo messenger
Lime wire
Free ringtones
source: http://www.theinquirer.net/?article=31675
So next time, you're trying to test the capabilities of your security defenses (whether you're Joe User or whether you actually evaluating a security product), just google up some of these terms from an unpatched computer. You may even want to click on the "I'm feeling lucky" button.