Twitter tests Promoted Tweet Carousel, an ad format that lets brands include multiple tweets, including tweets from other users with their permission George Slefo / Ad Age : Ad Age 2016-06-05 George Slefo Twitter, George Slefo Related Coverage View article The Twitter Blog View article Social Media Today View article Adweek View article Marketing Land View article Mashable View article SocialTimes View article internetretailer.com View article Digiday