From showusthecode.com, an open letter to Steve Ballmer.
It’s come to many in the Linux community’s attention you have claimed again and again, that Linux violates Microsoft’s intellectual property. Not only that, but it’s been reported Microsoft has convinced businesses to pay for a Linux patent that you can’t provide. Therefore, this website will serve as a response to this accusation, and within it, a request. The request is simple, since you, Microsoft, claim to be so sure of yourself: Show Us the Code.