laurie siegel sat down with tumblr ceo david carp.ting, he didn't even finish high school, and now he's negotiating with marissa mayer, what was her role in all of this in. >> look, marissa mayer has for some reason this charm in the tech industry. you see all of these young entrepreneurs going to yahoo now, and they weren't able to get a lot of the younger start-ups to get involved. it wasn't cool to be acquired by yahoo, and i will say this, david carp really defined cool. he's a new york-based entrepreneur, he used to drive a vespa around the streets, has a beautiful girlfriend. >> listen to what he said to me, christine. >> not only is she a genius of the she is something that i really value. she's one of the most uniquely happy and productive people i've ever met certainly in this industry. that's something that i -- we just strive for in the sense of eternal optimism and purpose. she brings that in a profound way sglp so interesting. i think people think you made $250,000 of his own money. here is a kid, born and raised in manha