Seth is a best selling author, entrepreneur and agent of change. Some of Seth’s popular books are The Dip, Meatball Sundae, Free Prize Inside, All Marketers Are Liars and Purple Cow. His books have been best sellers all over the world. Seth was founder and CEO of Yoyodyne, the industry's leading interactive direct marketing company, which Yahoo! acquired in late 1998. In late 2005, Seth founded the "recommendation network" website Squidoo.