Performance of the Toronto Paper Matching System (TPMS) for (conference) paper review assignment
Laurent Charlin's reference (http://papermatching.cs.toronto.edu/webapp/profileBrowser/about_us/) suggests that it's been adopted by "over 50 conferences", including the following conferences:


European Conference on Computer Vision
Conference on Uncertainty in Artificial Intelligence 
Conference on Neural Information Processing Systems
Conference on Computer Vision and Pattern Recognition
International Conference on Computer Vision
International Conference on Machine Learning
Artificial Intelligence and Statistics Conference 


And it also "keeps the profiles of 8,000 reviewers". In machine learning circles, this is just about as good as it gets with non-mass-market data. The size of the training pool and the fact that it's been continuously worked on means it is likely to have become a fairly reliable tool.