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)
Pafl: I don`t think that masters or international master are playing at turn based sites like BK.
You will meet them mainly at the great chessservers like "ICC" or "Playchess.com".