Meta wanted advertisers to believe its ecommerce ad product, Shops ads, was outperforming the competition, per a whistleblower complaint filed in a U.K. court. The former employee alleges the social media giant artificially inflated return on ad spend (ROAS) by counting shipping fees as revenue, subsidizing bids in ad auctions, and applying undisclosed discounts.The complaint, viewed by ADWEEK, was filed with the London Central Employment Tribunal on Wednesday (August 20) by Samujjal Purkayastha...