This document summarizes a presentation by Christine Connors on taxonomies and their role as a foundation for more complex semantic structures like thesauri and ontologies. It outlines a continuum of increasing complexity from folksonomies to taxonomies to thesauri to ontologies. It provides examples of existing taxonomies, thesauri and ontologies like OpenCyc and DBpedia. It discusses how information would be indexed using these structures and capabilities semantic technologies provide to clients in areas like reducing costs, increasing revenue and compliance.