What are the ground rules?
140 characters max. (the maximum for a twitter post).
I asked on the Livecode list whether the sc people used more rules and will report when I get a answer. I'd say loading external samples would be out of the question, on the logic that those can't be "tweeted" either.
I'd say it also has to compile and run in the latest default ChucK download without extra flags, which sadly excludes CNoise but also prevents sneaky trickery like recompiling ChucK with a Amen break in the "special" samples :-).
Errors/warnings and eventual crashes seem perfectly fine to me.
I don't feel there should be any need to actually send it out over Twitter if you don't have a account there and/or don't like that. Having some sort of clear submission process would probably be a good idea, to avoid entries being overlooked.
These are just my proposals.
Yours,
Kas.