For instance, we now have that in the StackExchange universe for SQL Azure (which handles general SQL examples very well).
I was thinking it would be very nice to have a similar environment to be able to have a few class files and a console program to be able to demonstrate core basic C#/.NET programming techniques - live.
Is there such an online live C#/.NET environment already that we could use to post on StackOverflow? (If not, I will post on Meta).