DrupalCon DC 2009 - Drupal Taxonomy Revisited - Recorded by Robert Nelson Vance (http://robertnelsonvance.com/)
Drupal's taxonomy module supports a core component of information architecture for classifying content. Improvements to taxonomy module in Drupal 7, especially hook_taxonomy_term_load, will open up new opportunities for leveraging taxonomy in our sites. Taxonomy administration has also been given some UI and usability enhancements. This session will explain the purpose and usage of taxonomy module and some of the contributed modules that extend it.