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)
In the case where the checkmating piece could have been exploded I would recommend cancelling that game. The others are ok since the rules were applied correctly. I do like the current rules better, but i don't think the game has changed significantly enough to wipe out the history.