The founder of the Free Software Foundation, Richard Matthew Stallman, has termed Debian’s decision to include Mono as part of its default desktop task a move that “leads the community in a risky direction.” More here
Stallman said: “The problem is not unique to Mono; any free implementation of C# would raise the same issue. The danger is that Microsoft is probably planning to force all free C# implementations underground some day using software patents.
“This is a serious danger, and only fools would ignore it until the day it actually happens. We need to take precautions now to protect ourselves from this future danger.”