Ben - Just a flipout system. Time will tell if it catches on anywhere else.
Neil - Every system has it's pros and cons - We avoided a simple countdown, as this would either move the same volatility to the other end of the table (if the top score his high enough that every player scores), or create loads of ties for bottom place (if the countdown reaches zero before the last player). Hopefully this system will give a better measure of players' performance throughout the standings.
Lets see how this works, and if it doesn't, we'll change it again (and add another zero to the end).