Chuck Barris, game-show producer and occasional murderer, realized like P.T. Barnum before him (and reality shows after) that there was money to be made off the marginal and the freakish. But I doubt even Barris could have predicted that during his lifetime the sideshow tent would be relocated to the center ring. That’s the cost of new technologies decentralizing the media, a price that seems high but one we should be willing to pay.