Prof. Hanghang TONG (MLD phd) and Prof. Leman Akoglu (CSD phd) worked on analyzing the correlation between quality of questions and quality of answers, in “stack-overflow” – their paper is on the web: http://arxiv.org/abs/1311.6876

The MIT-tech-review article can be found at
http://www.technologyreview.com/view/522171/data-mining-reveals-the-secret-to-getting-good-answers/

Congratulations, Hanghang and Leman!