Hi Ben,
My question is really about the stack used at Facebook... I believe, and correct me if I am wrong, that Facebook switched from working @php to developing and contributing actively to a JS framework. Which problems was it meant to solve? Do you feel that it was a success?
And if yes, would you mind sharing? If no, how do you think the company will change to accommodate?
What do you think of Node.js? Is there an interest at Facebook in this tech? If yes, why? If no, why not? :D