The best platform to build on is the one you know inside and out. Spolsky and Atwood are long-time Microsoft developers. I would call them stupid if they hadn'

The best platform to build on is the one you know inside and out. Spolsky and Atwood are long-time Microsoft developers. I would call them stupid if they hadn't used Microsoft to develop their product with. Personally, I can't imagine doing the scaling, but I don't know the platform at all. SO has obviously figured out how to scale well, though.