From the article: "A report from security company PandaLabs identified over a million links targeting malicious webpages ranking for auto part searches. Google noted that many of the phrases mentioned in the report were rare. A phrase like [1989 Nissan Pickup Truck Engine Check Light Troubleshooting], for example, only appears on attack sites set up by spammers, which explains why Google brought back so many attack sites in response to it and similar queries."

Google wants to knock most of the spam and malware sites off of the SERPS. I hope innocent sites don’t get caught up in the storm.