This is a highly innovative and stimulating work with the outline of an entirely new approach to massive and rapid shifts in opinion and communication. It discusses and explains such mysterious phenomena as sudden crazes and crashes, fads and fashion, hypes and manias, moral outrage and protests, gossip and rumors, and scares and panics. Rich in alternative insights, the book is divided into four parts. Part I discusses the points of departure: the most relevant processes of opinion formation and communication. Part II is about phenomena on three different levels, that have tradition