The OAI Protocol for Metadata Harvesting offers the prospect of resource discovery tools far beyond what is currently available to users of the Web via standard search engines. This article illustrates how existing information about available resources can be repurposed fairly easily and cheaply using standard tools. However the publishing of this information throws up a number of practical and philosophical questions which have to be addressed by projects and institutions.
Hunter, P., & Guy, M. (2004). Metadata for Harvesting: The Open Archives Initiative, and how to find things on the Web. The Electronic Library, 22(2), 168-174. https://doi.org/10.1108/02640470410533434