Some of you guys are jerks. No, I'm not talking about you, dear reader, whose erudition and class I've always admired. And you smell good, too. But some of you other guys are some seriously pre-literate knuckle draggers. Exhibit A would be the relatively new message boards on the Web site of that great metropolitan newspaper, The Miami Herald. Or at least it would have been, before management stepped in a few weeks back, began policing the boards more closely and put up a notice asking people to keep their comments on-point. Before that, the message boards, theoretically a place...