As recently reported (2.26.09) by PCMag, Inc. pushers of Malware (Viruses) are using Search Optimization Tools to place their deceptive Web Site links high on the results of Search Engine Sites to increase the number of infections.  And this means money for the criminals if they can turn your computer into a Zombie or electronically pick-pocket it.  This is why several options are recommended.

First, make sure you have multi-layered security to protect the computer as instructed by the c-a-l-m-m.com manual.  Two, use a browser Add-On that can warn prior to visiting a link to a Web Site.  Firefox may not work perfectly at all your favorite web sites, such as certain social sites, but for general web surfing it provides good protection.  Consider using your favorite Internet Browser for your most trusted web sites and Mozilla Firefox for general web surfing.  Or, add a web screening tool to your Internet Browser of choice.  Typically, these Internet Browser additions can be found via the Tools option of the Internet Browser.