I have just created a mailing list for general discussion of Grouch, my object schema specification and verification system for Python. (In plain terms, it's a type-checker for Python databases.) Anything Grouch-related is fair game: usage questions, bug reports, development issues, questions about the code, future plans, etc.
You can join the list at http://mail.mems-exchange.org/mailman/listinfo/grouch-users
The list archives (currently empty, of course) are at http://mail.mems-exchange.org/pipermail/grouch-users/