Why is there a limit of 15 mission-related posts per player, per calendar month?
This is simply to ensure that excessive posting doesn’t happen on the DM. If this happens, the other players assume wrongly that they have to keep up with this posting rate to remain within the game. When a mission related post reaches the game, good players will want to react to it. But in order to make every one happy, I have discovered that it’s best not to have too many such posts per week, otherwise it’s virtually impossible to follow the plot and post for one’s department.
