“The Cluetrain Manifesto” began as a Web site (cluetrain.com) in 1999 when the authors, who have worked variously at IBM, Sun Microsystems, the Linux Journal, and NPR, posted 95 theses about the new reality of the networked marketplace. Ten years after its original publication, their message remains more relevant than ever. For example, thesis no. 2: "Markets consist of human beings, not demographic sectors"; thesis no. 20: "Companies need to...