I have read many articles where a open source developer or group says Windows is bad, Microsoft is bad and their open source is good. It is FREE. I always get in argument, that it is not that Windows is bad, but some people like them present their product after compare it with Microsoft product (That only shows how microsoft products are, that people do make a comparable software to compete it).
Anyways, I found this blog articles, which are based on data present on official website of relative software, which is an eye opener for all
http://blogs.technet.com/security/archive/2008/05/15/q1-2008-client-os-vulnerability-scorecard.aspx (Windows Vs Linux Vs Mac OS)
It is not that microsoft make very good software, but they did nothing wrong by making them.
If you are a open source developer, please please do not spoil the name of Open source community by standing against Microsoft. You make good software, then act and advertise on your software features, not on other products Weakness.
Hope that will tell you why I love MS 🙂