We just released a technical report that presents results on the characterization studies I have been doing on social tagging systems in the past years. This work was a collaboration with colleagues from the Universidade Federal de Campina Grande and University of South Florida.
Elizeu Santos-Neto, David Condon, Nazareno Andrade, Adriana Iamnitchi, Matei Ripeanu. Reuse, Temporal Dynamics, Interest Sharing, and Collaboration in Social Tagging Systems. Technical Report. January, 2013.
Comments and suggestions are always welcome!