I first met Mark Johnson at SND St. Louis in September 2011. The now 35-year old CEO of Zite — a personalized magazine app acquired by CNN earlier that year — was the definition of unassuming. Sporting a curly fro, eyebrow ring, t-shirt and backpack, I actually mistook him for a college student. Our first conversation had us discussing everything from cocktails and news design to architecture and taxidermy. Here, Johnson talks innovation, personalization and user-experience design in media.