We run an adserving company which, among other things, does optimization based on ad campaign results, - manual training of algorithms is just not going to work

We run an adserving company which, among other things, does optimization based on ad campaign results, - manual training of algorithms is just not going to work there, so we need to distribute the training among a cluster of machines. We're not using Mahout, but I keep an eye on it since it might be an improvement to our current solution.