In this highly entertaining book, Denby traces the history of snark through the ages, starting with its invention as personal insult in the drinking clubs of ancient Athens, tracking its development all the way to the age of the Internet, where it has become the sole purpose and style of many media, political, and celebrity Web sites. Snark releases the anguish of the dispossessed, envious, and frightened; it flows when a dying class of the powerful struggles to keep the barbarians outside the gates, or, alternately, when those outsiders want to take over the halls of the powerful and expel the office-holders. Snark was behind the London-based magazine Private Eye, launched amid the dying embers of the British empire in 1961; it was also central to the career-hungry, New York - based magazine Spy. It has flourished over the years in the works of everyone from the startling Roman poet Juvenal to Alexander Pope to Tom Wolfe to a million commenters snarling at other people behind handles. Thanks to the grand dame of snark, it has a prominent place twice a week on the opinion page of the New York Times.

Denby has fun snarking the snarkers, expelling the bums and promoting the true wits, but he is also making a serious poi...