Which websites are dangerous?

With literally million upon millions of websites offering numerous services, entertainment, opinions, news, products, and downloads, determining which of these sites are good or malicious for our computers is largely a guessing game.  That is, it was.  McAfee provides a free product called Site Advisor that adds a small bar to the bottom of your browser that gives a green, yellow, or red indicator (think traffic lights) for the safety of the site you are currently visiting.  Like all software, it isn’t perfect, and the few sites it isn’t aware of, it will give a gray indicator.  The add-on to your browser is available at the Site Advisor website.