Or IP addresses... The problem with banning player names is that two different people can have the same player name. I know that once I saw another player with one of the names I use show up on the board, but I knew it wasn't me. AFAIK, there is no way to edit a player name without deleting game.

I agree with those that say that it gets frustrating with never being able to appear on the boards. (Once you get 50 Elders, you need to be really lucky to get the right event affect the right villager to get an additional Elder.) It may be better to reset the board each month. At least that way those who are active, but already have 50 Elders, have a chance of seeing their name.