On the “social web” or “web2.0″, where user participation is entirely voluntarily, User Motivation has been identified as a key factor in the mechanisms contributing to the success of tagging systems. Web researchers are trying to identify the reasons why tagging systems work for a couple of years now, evident in, for example, the organization of a panel at CHI 2006 and a number of conferences and workshops on this topic.
R. Yangarber, L. Jokipii, A. Rauramo, and S. Huttunen. Proceedings of HLT/EMNLP on Interactive Demonstrations, page 22--23. Morristown, NJ, USA, Association for Computational Linguistics, (2005)
R. Agrawal, J. Gehrke, D. Gunopulos, and P. Raghavan. SIGMOD '98: Proceedings of the 1998 ACM SIGMOD International Conference on Management of Data, page 94-105. ACM Press, (1998)