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)
Justaminute: Only if you consider "any language" to be languages that use the Western alphabet. "b1-c3" isn't easy to understand if you're used Arabic or Chinese.