Google adds malware warnings to search results
One particular instance is when "list keygen mirc" is searched. If users click on the first entry in the search results, they are directed to a Google Warning page, letting them know that the site they are about to visit may harm their computer. Google then gives the opportunity to click into the site, or perform another search.
It looks like Google is also helping users protect themselves by directing users to StopBadware.org, A neighborhood watch site dedicated to fighting badware. The StopBadware site also helps users detect, and get rid of malware they might have installed on their computers.