If you haven't noticed. This game is mostly played by mobile users so the text box is very small. If you left a 500 character message it would be overly tedious to scroll through all of that. It would also be annoying if you're in the middle of a conversation and the new guild message completely takes up the chat to the point you have to scroll to see what he or she said. Perhaps sts could add some type of rule board to the guild hall instwad.