Any future offenders will be removed from the game immediately.
Probably this rule should be put in the scoreboard.
well, actually we already had a rule:
§10 FAIRPLAY: There are no prizes, this game is just for fun. Don't edit or delete messages, don't alter the actual exchange rates or "make a mistake" when calculating your current balance. When others notice intentional miscalculations, you will be deleted from the scoreboard and excluded from the game.
Let's just see this 10% penalty as a 'one time favor'. This can be applied to others in the future, but only inder certain conditions:
*player is with us for a long time
*player admits he was cheating
*no trolling behaviour in the past
*our current mood
by default people will be excluded. Only a few will get the 'one time 10% penalty'