The best science fiction novel about Madison Ave you'll ever read

In 1953, a tiny publishing house called Ballantine released The Space Merchants, a novel-length adaptation of "Gravy Planet," a Frederik Pohl short story that had taken the SF world by storm. That story was about the future of the advertising industry, written by a guy who had been an ad man for several years. Dark and… » 1/30/12 5:14pm 1/30/12 5:14pm