Co-founder and CEO, Pinterest
40 Under 40 rank: 18
Twitter user name: @8en
Number of followers (as of Oct. 9, 2012): 10,743
Our favorite tweet: Pleased to hear that there are twice as many emperor penguins in Antarctica than previously thought.
They're the hottest young stars in business across the globe. They're innovators, disrupters, and job creators; in fact, it's a pretty safe bet you're going to be working for them someday -- if you aren't already!
