Reason No. 4: Young Guns

They sure know how to get people talking. Tony Hsieh, Blake Mycoskie and Nicholas Kirkwood are ushering in a new era of young, talented and powerful entrepreneurs and designers. CEO Hsieh, 36, has taken the publishing world by storm this month with his new book, “Delivering Happiness,” which is now atop almost every major best-seller list. And under new parent company, Zappos continues to post impressive sales gains.

Meanwhile, Mycoskie, 33, has created an inspirational business model at Toms Shoes and is poised to deliver hundreds of thousands of shoes to underprivileged children this year.

And Kirkwood, 29, is fast becoming a major force in the luxury world, with dramatic designs and buzz-worthy collaborations.

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