Short and Tweet: Experiments on Recommending Content from Information, Chen, J., Nairn R., Nelson L., Bernstein M., and Chi E. , Proceedings of the 28th annual conference on Human Factors in Computing Systems, 04/10/10, Atlanta, GA, (2009)

Lurking? Cyclopaths? A Quantitative Lifecyle Analysis of User Behavior in a Geowiki, Panciera, K., Priedhorsky R., Erickson T., and Terveen L. , ACM Conference on Computer-Human Interaction (CHI), 04/2010, Atlanta, GA, (2010)