Paul Hurley is a very particular kind of serial entrepreneur: the kind who built companies to educate himself. Ideeli, the flash-shopping website Hurley co-founded in 2006 with Mark Uhrmacher, is where that education has paid off. The company had $77.7 million in revenue last year (Hurley expects sales to at least triple in 2011) to bring its three-year growth rate to 40,882 percent. For more about Hurley and ideeli, the No. 1 company on the Inc. 500, see "The Fastest-Growing Private Company of 2011."