- Newbies (players with 0 games played) should drop after missing 1, or maybe 2 turns.
IMO, this would improve the game, because it's not infrequent to create a game, only to have a ? with no games played join it and never take a single turn. Those players should be dropped immediately, because otherwise it's 3 days until the other players can get going. Especially for non-paying players, who only have 4 games to play at a time, this would be huge.
I figure if you join the site, join a game and then don't take a turn on the same day, you've either forgotten about the site or lost interest before even starting. If you were actually interested, you would have played that first turn. I could see not doing this for newbies who initially take a turn, or letting them slide for 2 turns. But I really think that first missed turn is a pretty good indication that they're not coming back.