"tagging eliminates the decision - (choosing the right category), and takes away the analysis-paralysis stage (...) it provides immediate self and social feedback (...) it taps into an existing cognitive process without adding add much cognitive cost"
"Tagging works because it strikes a balance between the individual and social. It serves the individual motive of remembering, and forms a ad-hoc social groups around it."
I. Blümel, S. Dietze, L. Heller, R. Jäschke, and M. Mehlberg. (2014)12th International Conference on Current Research Information Systems, \CRIS\ 2014Managing data intensive science – The role of Research Information Systems in realising the digital agenda.