You can read his wikipedia bio, reviews of his seminars and what Google thinks of him. Godin is author of nine books that have been bestsellers around the world and changed the way people think about marketing, change and work. His books have been translated into more than 20 languages, and his ebooks are among the most popular ever published. He is responsible for many words in the marketer's vocabulary, including permission marketing, ideaviruses, purple cows, the dip and sneezers. His irrepressible speaking style and no-holds-barred blog have helped him create a large following around the world.