Do you mean access to the data?
No. People have private predictions in there, so I don't think I can in clear conscience give you access to anyone's predictions but your own (and giving you access to only your own is about half as much work as properly open sourcing the project). I mean the code… and you didn't quite send me your promise that you'll behave responsibly yet.
Well, alright. I see I didn't specifically say 'public data'. That's what I want.
and you didn't quite send me your promise that you'll behave responsibly yet.
I think it's kind of silly to ask for such a promise, but for what it's worth, you have it. (What irresponsible things could I do with just the codebase? I'm no cracker to find security holes and exploit them on the live site.)
Our hosts at Tricycle Developments have created PredictionBook.com, which lets you make predictions and then track your calibration - see whether things you assigned a 70% probability happen 7 times out of 10.
The major challenge with a tool like this is (a) coming up with good short-term predictions to track (b) maintaining your will to keep on tracking yourself even if the results are discouraging, as they probably will be.
I think the main motivation to actually use it, would be rationalists challenging each other to put a prediction on the record and track the results - I'm going to try to remember to do this the next time Michael Vassar says "X%" and I assign a different probability. (Vassar would have won quite a few points for his superior predictions of Singularity Summit 2009 attendance - I was pessimistic, Vassar was accurate.)