Seth Godin
American Way Magazine calls Seth America's Greatest Marketer, and his blog is one of the most popular in the world written by a single individual. As an entrepreneur, he has founded dozens of companies, most of which have failed. His latest company,\xa0Squidoo.com, is ranked #36 in the US by Quantcast for traffic. It allows anyone (even you) to build a page about any topic you're passionate about. The site raises money for charity and pays royalties to its million plus members.