A behind-the-scenes deal between Google and Mastercard was just revealed, whereby Google paid “millions of dollars” for “a stockpile of Mastercard transactions” that most of the credit card company’s two billion users were unaware of. Over the past year, Google provided select advertisers with the ability to track whether online ads led to sales at physical stores in the U.S. While the deal could give Google leverage over rivals such as Amazon, it could also raise privacy concerns regarding how customer data is used and shared. Google says no personal data was shared about users. Continue reading Mastercard Deal Provides Valuable Info for Google Advertisers