National Science Digital Library (NSDL)
•Very large scale distributed digital library
–1,000,000 users
–10,000,000 items
–100,000 collections
•Large institutional and funding commitment
–$25M+ funding
–Over 80 collaborating institutions
•Technical infrastructure builds on OAI-PMH foundation
–Aggregation and dissemination of metadata
•http://www.nsdl.org
Adapted by major projects – here is one.  OAI is the fundamental protocol for moving MR around.  We expect to learn something about usefulness of MD and protocol in general.