well... I can't be right all the time now.
Why not? I am!
More seriously, I too would be interested to know how the ranking system is suposed to work.
Is it simply a win is plus 1 point, a loss is minus a point - or is it more sophisticated, where a win against a higher ranked (or level) opponent counts as more than a win against a noob player (as it should). I believe the later is based on the ELO system of chess, and it is used successfully in, for example, Stick Empires.