The Realities of American Economic Mobility

Social media, email, and Web ads seem to be making big inroads against magazine, newspaper, radio, and television advertising. Yet, direct mail, one of the most traditional ad media, seems to be evolving into a crucial component of the new integrated mix. What's behind this trend? Is it sustainable? What opportunities does it present? We'll provide the answers.

America is known as the "land of opportunity." At a time when Europe and Asia were defined by rigid class systems, the United States offers the prom.....