It seems that the number of points in the xsketch "economy" constantly increases because new players with zero points can put points they don't have into each pot. Does this mean that player scores reflect not only how good you are but also how long you play against such players (as you will soak up free points)? Is the problem limited to the tables where zero-point players go? And is there reason to implement a different scoring system, such as one where you can get negative score?