I would like to start by applauding your initiative. Your team has created a really cool site that has this viral feel to it. I got addicted from my first shot. Since I love python, my first competition was the Pythonist2 challenge, I loved it. I believe it went downhill from there for me.
I am currently doing the week of code competition and found a bug that basically threw me out of the competition. Your test cases are not independently run. At least not for python!