..".fascinating. Like Malcolm Gladwell on speed."
--THE GUARDIAN

"HERD is a rare thing: a book that transforms the reader's perception of how the world works."
--Matthew D'Ancona, THE SPECTATOR

"This book is a must. Once you have read it you will understand why Mark Earls is regarded as a marketing guru."
--Daniel Finkelstein, THE TIMES

This paperback version of Mark Earls' groundbreaking and award winning book comes updated with new stats and figures and provides two completely revised chapters that deal with the rise of social networking.

Since the...