The human race has been defined in many ways: as "a featherless biped" (by Aristotle, who knew nothing of T. Rex or even the great apes), "homo sapiens," and "homo faber." It could equally well be classified as "homo garrulus," the species that loves to gossip, argue, and sound off -- especially on topics where there is unlikely to be a last word. Everyone is entitled to an opinion, and the Web has done a magnificent job of letting the broad masses publish theirs.