
I know there is a nag button for players but what about a nag button for the GM that players can use when there is something up with the game? lol No I'm serious! Sometimes its not the players that are missing but the GM.
For the Game Masters: I usually follow up with them via their Review Thread if I see a Role-playing Game lagging or offer tips where there Players seem to be 'lost'.
For Players, you can go to your GM's introduction and ask him / her what is happening and an Email notification will be sent. This can also be done with Players you think are not timely.