A free membership allows a player to play only 20 games simultaneously and when this limit is reached, new games cannot be started until the number drops below 20.
Higher membership levels solve this problem in the following way:
(hide) If you want to save on bandwidth you can reduce the amount of information that shows up in your pages in the Settings. Try changing the number of games in the main page and the number of messages per page. (pauloaguia) (show all tips)