The document discusses 10 ideas for the new decade in digital marketing. It begins with an introduction noting how social and digital media have become mainstream over the last decade. The introduction outlines 4 key themes seen across the 10 essays: 1) the shift to digital is global and pervasive, 2) engagement is migrating to mobile, 3) companies are just beginning to embrace engagement, and 4) the future involves using data intelligently while respecting privacy. The document then provides short summaries of each of the 10 essays addressing emerging trends in digital marketing for the new decade.