There's a revolution going on in the art and science of categorization, and its name is folksonomy, a term term invented by information architect Thomas Vander Wal. Folksonomy is like taxonomy, the traditional way to impose structure on the blooming confu
C. Marlow, M. Naaman, D. Boyd, and M. Davis. HYPERTEXT '06: Proceedings of the seventeenth conference on Hypertext and hypermedia, page 31--40. New York, NY, USA, ACM, (2006)