(originally posted on DesignBigger)
In the thousands of Google Webmaster Tools alerts and messages that are sent each month, about 90% of those are estimated to be black hat related. Another stat that’s interesting is about 3% are notifications of a hacked site; chances are, you’ve seen pharma spam in the SERP results that lead to a normal-looking page. That same 3% covers malware-infected sites, too. Check out the video for Matt Cutts’ take on these alerts.