Thomas Vander Wal brings to light the depth of new terms surfacing in folksonomies that are not in taxonomies.
New research paper for tagging in public libraries - confuses reader tagging and author tagging, which can be problematic. Other than there is good stuff in the paper.
A not so short look at the state of tagging, there is some good movement forward but there really needs to be more
Bob du Charme explains rich understanding of the metadata in folksonomies
Nice overview of Thomas Vander Wal lecture at De Montfort University
A good explanation of collective intelligence and its relation to social bookmarking