If you are concerned about surfing safety and the creepiness of a web site, SiteAdvisor might be for you. It’s available as a Firefox Extension or for IE.
McAfee has SiteAdvisor now. I have never had much luck with McAfee, and tried it a couple of months ago with the result that it crashed Firefox often and I uninstalled it. Now on the second try it seems fine.
What does it do?Â