For posting:
- invitations to games (you can also use the New Game menu)
- 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)
I think it's fine but just not enough. Further I don't think a king next to another king can be checkmate, since I could make any move and my opponent would not be able to capture my king without exploding his.