This document discusses social bookmarking and tagging as ways to collaboratively organize and classify content. It explains that folksonomies, which are bottom-up classification systems created by collaborative tagging, allow for evolving nomenclatures, dynamic information sharing, and multiple viewpoints. While folksonomies can become messy, tagging content with simplified descriptive, resource, ownership, and self-reference tags helps provide a flexible and aggregated taxonomy for distributed teams to find and collaborate on information.