we are back now with om malik of true ventures and dan rosensweig, the ceo of chegg, the only guy in who ever got mark zuckerberg to agree to sell his company. what happened there? >> it was early on and they had four and a half million users. i had met mark. we were both born in roxbury, new york. i listen to his vision and story and his confidence. talk about being bossy. i fell in love with him and where he was going. that was only when you could connect college to college. we talked about it and he had a vision to take over the world, which you see him doing now. the combination would have been extraordinarily powerful and mark agreed to do it. the famous line, what is really cool is a billion. that was the offer. >> you got him to agree to sell facebook to yahoo! for $1 billion. he backed out. what is it like negotiating with mark zuckerberg? what is different today? think about these companies like instagram and whatsapp that are all negotiating to a certain extent with him. >> he has a charisma that most people who do not spend a lot of time with him don't understand, which is