Mint.com: Aaron Patzer

He sat down with Microsoft Money, the desktop budgeting tool, and downloaded an avalanche of transactions, most of them uncategorized. "I thought, My God, it will take me all weekend to understand where my money is going."Patzer, who grew up in Evansville, Ind., had shared the Wall Street Journal with his dad at age 3 (his father read it aloud to him), learned how to use a computer at 6 and started his own Web company at 16, putting himself through Duke University with the profits.