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Marfitalu: Why does everyone complain about slow players? If you have a problem with someone taking 5 days to make a move sign up for a game with a 3 day limit. This will put your games at the top of your oponents list causing them to play you more often.
People generally play within the time constraints and generally play the simple games and games with little time left first then the harder games and games with lost of time left later.
I know people with over 1000 games active and they don't play slowly. If you are playing a game with 1 day limit they will play every day and if you play with 1 week limit they will play every 4 to 7 days.
Conclusion the only reason you are fining slow players is you are playing games with to large a time limit.