In the first post on Contest Scoring it says:
"This is fairer for newcomers as they can beat the best old players by scoring high in the next contests."
But this is not true.
The maximum score possible for Codebusters was 3968 CP, this went to Recar.
But the top 331 entrants of Code vs Zombies all got more than 3968 CP (the maximum was twice that).
And the top 73 of Smash The Code got more than 3968 CP, and so on.
So if someone got top 100 scores in the previous 3 contests then a newcomer cannot beat them.
Even Recar's victory score is not included in his own total, because he has 5 better scores already!
So perhaps we can give each contest a comparable, fixed score? e.g. use
3000^((N-C+1)/N) * 2
N^((N-C+1)/N) * 2
(and keep the best 3).