For too many years to remember people have been claiming the end of TV advertising’s effectiveness. First there was the advent of cable TV. “Too many channels will make the viewing audience too splintered.” the experts said. They were right (a bit) about the splintering. But in stead of it being a problem, it turned into a tremendous opportunity for savvy advertisers. Now, for the first time, you could target your audience by lifestyle. You wanted to reach teenagers? Buy spot