Anyone interested in the future of the book, texting, the internet and social activism should take a look at Howard Rheingold's website. Built around his new book, Smart Mobs: The Next Social Revolution (Perseus Press), it presents the tenets of the book with links to related discussions worldwide. "Smart Mobs"? They are what emerge when "communication and computing technologies amplify human talents for co-operation". And their impact can be "both beneficial and destructive".