Marketers such as Giorgio Armani, Porsche, Mandarin Oriental, Neiman Marcus, Caroline Herrera and Van Cleef & Arpels are among the 96 advertisers that have boosted American Express Publishing’s Departures magazine 46 percent year over year in ad pages.The publication saw particular growth in its May/June and October issues, but growth was gradual throughout the year. In addition to impressive print performance, Departures expanded its digital channels with a revamped newsletter, social media outlets and a mobile application.