Is World Wrestling Entertainment down for the count? Long viewed as the best (if not most tasteful) way to reach teenage boys, the league has begun to suffer serious ratings erosion of its marquee shows. Vince McMahon and company have attempted to stem the slide by rolling out a new trio of cable shows whose appeal is limited mainly to wrestling's hardcore faithful. But such measures, or even better conceived ones, may not do much more than slow the WWE's descent, with wrestling's popularity entering one of its cyclical downturns in the view of some analysts. The slip in ratings...