From 9/11 conspiracy theorists and UFO obsessives tothe cult of Ayn Rand and Birthercrusaders, America is suffering from an explosion in post-rationalistideological movements. In Among the Truthers,journalist Jonathan Kay offers a thoughtful and sobering look at how socialnetworking and Web-based video sharing have engendered a flourishing of new conspiracism. Kay details the sociological profiles of tenbrands of modern conspiracists—the Failed Historian,the Mid-Life Crack-Up, the Damaged Survivor, the Campus Revolutionary, theStoner, the Clinical Case, the Puzzle Solver, the Christian Doomsayer, the CosmicVoyager, and the Egomaniac—in a compelling exploration of America’s departurefrom reason and what it means for the very future of rational discourse as thenation steps further into the 21^st century.