If you strongly support or oppose this language, please edit the article to participate in discussion. This article is not about the language itself, just about its applicability for Ultrastudio.org visualizations
Moonlight is FOSS alternative of Silverlight. It would mean writing applets in C#. This should be attractive for people who love both Free Software and .NET - there are some, while it may look strange from the first sight. The biggest problem would be continuos pressure toward the "Windows only" way - almost for sure we would keep getting contributions that run on Silverlight and not on Mono - what to do with them, then? We may not have time to fix them all, and it will be increasingly difficult to discard that is, after all, contribution.
C# is of course sufficiently popular in big commercial projects, but we are still not fully sure it is popular enough between our potential contributors.