Tony Hsieh (@zappos), the CEO of Zappos.com knows a thing or two about successful business. Before Zappos, Hsieh co-founded internet advertising network LinkExchange which was eventually sold to Microsoft for $265 million in 1999. Hsieh is a strong believer in doing what makes you happy which he applies at Zappos which contributes to its success. While he isn’t as active on Twitter nowadays, he has a new endeavor called Delivering Happiness (@DHMovement) which began as a book and is no a movement to nudge the world to a happier place by inspiring, connecting and educating people about create meaningful experiences in all aspects of their lives. His Twitter feed includes entrepreneurial words of wisdom, inspirational quotes and sharing helpful articles.