Use ScanSafes Scandoo OR McAfee SiteAdvisor.
ScanSafe's Scandoo Beta (just like the freeware McAfee AiteAdvisor) classifies your searches as safe or unsafe. its a service that categorizes your Web search results so that you know whether you're surfing into spyware, porn, or other sorts of treachery...it has plugings for ie6.ie7, ff, etc
to see how it works
click
http://static.scandoo.com/scandoo/howitworks.html
homepage
http://static.scandoo.com/scandoo/toolsandservices.html
for more on McAfee SiteAdvisor click
http://www.siteadvisor.com/
http://www.pcworld.com/news/article/0,aid,124936,00.asp