An anonymous reader writes from a report via NBC News: The Supreme Court on Monday has rejected Google's appeal in a class action lawsuit involving claims that the company deceived California advertisers about the placement of internet ads via its Adwords service. NBC News reports: "The court's decision not to hear the case leaves in place a September 2015 ruling by the San Francisco-based 9th U.S. Circuit Court of Appeals that the litigation could move forward as a class action representing advertisers who use the service between 2004 and 2008. The 2008 lawsuit accused Google of violating California fair advertising laws because it misled advertisers about where the ads would be placed. The Adwords service was primarily aimed at placing ads next to relevant Google internet search results. But the plaintiffs said Google should have disclosed that ads would also appear in undesirable places such as error pages and undeveloped websites known as parked domains." Google has made an effort to clean up some of its ads. In February, the company announced it would be ditching sidebar ads. Most recently, Google announced in early May that it would ban payday loans and some related products from its ads systems.