Communities develop and evolve metadata schemes to serve their current and emerging needs. In its first incarnation, the Dublin Core Metadata Element Set comprised thirteen elements to assist in resource discovery. Subsequently two additional elements were added. Over the past six years, the metadata scheme has evolved to provide more specific encoding through the use of qualifiers, and the extensibility of Dublin Core has been exercised by a number of communities (as reflected in the application profiles created by several communities) [1]. Two significant questions emerge: When is a need significant enough to warrant additional capability in the metadata scheme? To what extent will the additional refinements and enrichment of the metadata scheme be utilized?