Since 2006, Twitter has grown from 100 obsessive users to more than 100 million today - over10million of those in the UK alone. But how did such a radical transformation happen in just five years, and what does it mean for business, politics and the internet? With unprecedented access to some of the major players in this unique drama, acclaimed New York Times business and technology columnist Nick Bilton chronicles the key figures who helped build the company, and who ultimately struggled to manage the influence and power they had been handed.