This piece is based on two talks I gave in the spring of 2005 -- one at the O'Reilly ETech conference in March, entitled "Ontology Is Overrated", and one at the IMCExpo in April entitled "Folksonomies & Tags: The rise of user-developed classification." Th
C. Veres. Natural Language Processing and Information Systems, volume 3999 of Lecture Notes in Computer Science, page 58--69. Berlin/Heidelberg, Springer, (2006)