"On any given day, you might find him tracking down potential hires, going for a run with his software engineers, or personally answering calls to Kayak's customer hotline." &#60;- what is this? software engineers don't run ;)<p>Honestly, he seems very down to earth and genuinely happy. I  also like how he doesn't have a problem constantly checking his email unlike all these productivity blogs and such saying its the worst thing you could ever do. I feel my behavior is somewhat vindicated in being one of those differences that doesn't really make a difference.