Logic would suggest that such a section would be secret, if it existed. It would be simple enough to send private messages to trusted members alerting them to the existence of a private invitation-only forum on another website where such discussions could be held.

Naturally, I would say none of this if I knew of such a forum, or had any intention of creating such. And I would not appreciate any messages informing me of the existence of such a forum - if for no other reason than that I am the worst keeper of secrets I have ever known.