Seth Godin, writes the most popular marketing blog in the world.
His latest book Tribes
argues that lasting and substantive change can be best effected by a tribe: a group of people connected to each other, to a leader and to an idea. Smart innovators find or assemble a movement of similarly minded individuals and get the tribe excited by a new product, service or message, often via the Internet (consider, for example, the popularity of the Obama campaign, Facebook or Twitter).
He did his first talk in the UK this year. Hear
it here.