When you're hot, you're hot--and we think the young entrepreneurs spotlighted in our first annual Hot List are nothing short of sizzling. That's not to say they're all alike. Some are born entrepreneurs; others got into business almost by accident. Some carefully planned each step; others forged ahead on sheer chutzpah. What they all share (besides being under age 30) is the guts to go after their dreams. We hope their stories inspire you to do the same.