In the Olympics of digital advertising, Amazon has earned itself a bronze medal. That’s because market research firm eMarketer says U.S. advertisers will spend $4.61 billion on Amazon’s platform this year, accounting for 4.1 percent of overall spend, which will make it the No. 3 digital advertising platform in the U.S. That means it is… https://www.adweek.com/programmatic/amazon-takes-third-in-the-latest-digital-ad-rankings/