that dramatized the behemoth's beginning. in the guest spot today is facebook employee who ended up in mark zuckerberg's inner circle. katherine's book, "the boy kings" looking into the heart of the social network. thank you for joining us. >> hi, good to be here. >> here's my first question about the culture at facebook. you talk about how you took it upon yourself to go after cyber bullying, which you saw as sort of an early revolution of facebook. i'm going to pull a quote from the book, where you say facebook like the internet in general made it so easy for people to post and gain visibility for