Threadless

What does it take to build a business with more than $30 million in sales before you turn 30? Start with a great idea and a penchant for risk, and give your customers a voice.

That’s what Jacob DeHart, 26, and Jake Nickell, 28 did with their online T-shirt design company, Threadless.com. The pair built an online community that allows users from all corners of the world submit t-shirt designs that are voted on, and then made available for sale. Since their launch seven years ago, every design printed has completely sold out.

Retailers like Target and Urban Outfitters have taken notice but the two preferred to stay on their own. Says Nickell, “We were just another product to put in their stores, and that’s really not the way we view ourselves.”

With more than half a million registered users and growing, the voice of Threadless community is the only marketing they’ll ever need.