"I don't know how much this will hurt MS with its core users" It will hurt everyone with an Internet connection. MS has filled the World with machines which a

"I don't know how much this will hurt MS with its core users" It will hurt everyone with an Internet connection. MS has filled the World with machines which are full of security holes and which only they can patch, and they've made a mint doing it. I would say it's their responsibility (ethically, not legally) to patch those machines until they stop being a massive threat to the stability of the Internet. I realise that this wont happen though.