What Should Microsoft's Open Source Strategy Be?

JWinterboy asks: "I'm guessing that everyone here has a valid criticism of Microsoft's attacks on, and approach towards the Open Source model. To me, that begs the question of what we think would be an "appropriate" reaction from Microsoft towards the Open Source model. It doesn't have a service arm, so IBM's approach isn't really viable. At the same time, non-service related business models haven't fared very well. What would we like to see Microsoft do? How can it work with the Open Source community, leverage its resources, and still make a buck?"