What is the internal algorithm that defines how an answer is chosen over another?
You can find the details of the algorithm in a paper that was presented at the European Conference on Artificial Life:Using Pareto Front for a Consensus Building, Human Based, Genetic Algorithm. If you are to use it please add a reference to it as: Pietro Speroni di Fenizio, Chris Anderson, (2009) Using Pareto Front for a Consensus Building, Human Based, Genetic Algorithm Proc. European Conference on Artificial Life (ECAL 2009), LNCS, Springer, Berlin, (in print).