Metadata is a keystone component for a broad spectrum of applications that are emerging on the Web to help stitch together content and services and make them more visible to users. The Dublin Core Metadata Initiative (DCMI) has led the development of structured metadata to support resource discovery. This international community has, over a period of 6 years and 8 workshops, brought forth: A core standard that enhances cross-disciplinary discovery and has been translated into 25 languages to date; A conceptual framework that supports the modular development of auxiliary metadata components; An open consensus building process that has brought to fruition Australian, European and North American standards with promise as a global standard for resource discovery; An open community of hundreds of practitioners and theorists who have found a common ground of principles, procedures, core semantics, and a framework to support interoperable metadata.