The most interesting question now to me is, not why is Ballmer stepping down, but who could run Microsoft well and succeed him? MS has only ever had two CEO's

The most interesting question now to me is, not why is Ballmer stepping down, but who could run Microsoft well and succeed him? MS has only ever had two CEO's - the founder, and the founder's right-hand-man. This will be quite a transition for them. What does the board want, what are that person's areas of expertise, background, and experience, man or woman, etc.