Tony Hsieh is an American entrepreneur and venture capitalist, better known as the CEO of Zappos.com. He sold his previous company, LinkExchange, to Microsoft for $ 265 million in 1999. In 2010, he debuted with his first book, Delivering Happiness which quickly hit the New York Times best-seller list. Since then, Hsieh has been considered to be a leading figure in the development of corporate culture and advanced customer service. He is also recognized as an influential Twitter personality with more than 2 million followers.