For posting: - invitations to games (you can also use the New Game menu or go straight to the Chess Invitation) - information about upcoming tournaments - discussion of games (please limit this to completed games or discussion on how a game has arrived at a certain position ... speculation on who has an advantage or the benefits of potential moves is not permitted) - links to interesting related sites (non-promotional)
and why couldn't there be a dark chess program? the difference is only in the evaluation which is based on probabilities rather than real positions. I don't know if anyone actually wrote one, but the project sounds interresting. I'll try to do it myself, the next time I'm young again...