The absence of the Netflix Prize may leave a gaping hole in some of our leisure activities. Well maybe not that big of a hole but at least some of our thought provoking lapses of time. If you are an avid modeler and really want to stretch your data mining and predictive modeling skills to the limit than there are other ways to get that accomplished.
Here are some other notable predictive modeling contests available compliments of KDnuggets.
A notable competition is the Analytics X Prize which aims at solving social problems within our world. The current prize is predicting homicide rates in Philadelphia. A bit morbid but may prove useful to municipalities across the world.
Also Yahoo has a collaborative learning or recommendation prize of their own. Yahoo Learning to Rank Challenge allows modelers to benchmark their ranking algorithms against the world. Must act quick because the challenge ends in June 2010.