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)
Yep, when the time runs out, the game is automatically forfeited, and they do count towards ratings and win/loss. However, if the game had less than 4 moves when timed-out, it will still count towards your win/loss, but will not affect your BKR, win or loss.