I am Sam Altman, reddit board member and President of Y Combinator. AMA
EDIT: A friend of mine is getting married tonight, and I have to get ready to head to the rehearsal dinner. I will log back in and answer a few more questions in an hour or so when I get on the train.
EDIT: Ok. Going offline for wedding festivities. Thanks for the questions. I'll do another AMA sometime if you all want!