Seth Godin is a marketing guru. He serves up incredible insight into the world of marketing. He is the author of 17 books that have been bestsellers around the world and have been translated into more than 35 languages. He writes about the post-industrial revolution, the way ideas spread, marketing, quitting, leadership and most of all, changing everything. You might be familiar with his books Linchpin, Tribes, The Dip and Purple Cow.