A reader pointed me to this — Frontline: the merchants of cool, a report on the creators and marketers of popular culture for teenagers and the symbiotic relationship they have with modern youth. Interviews with cultural critics, media executives and market researchers, as well as reactions from teens and a dissection of media conglomerates. There’s a feature on “how to get really close to teens’ lives” and another on “what it’s like hunting for ‘cool’ “. It’s going to take some delving into…