The AirBnB founders are one of the hardest working teams I've ever seen. When you think of all the incredible feats they pulled off in the beginning, it's hard to conceive of another team managing it.
http://gawker.com/5853754/the-seedy-spammy-past-of-airbnbs-c...
(including, but not limited to: rampant cross-site promotional spam, dead baby jokes, rambling on about how you overcame such adversity all the way from your $40,000/year private high school, follow-the-bouncing-ball upvote rings to promote insiders higher on the front page of Marketing To Nerds and Journalists Daily, and becoming an apologist for other people abusing/lying/cheating/stealing/manipulating things now that they are successful and you're afraid of them politically.)
They're not nice people.