Hello, Greg!
What a fascinating topic! I don't have any personal experience to share (still being in school myself) but I was intrigued enough that I did some quick searching through the journal databases. One interesting item that came up was:
Kim, K. Recent Work in Cataloging and Classification, 2000-2002 [Bibliographical essay]. Library Resources & Technical Services v. 47 no. 3 (July 2003) p. 96-108
It has a fairly substantial section: ELECTRONIC RESOURCES AND METADATA that you might find useful...
I didn't do an exhaustive search in the databases but I bet you could find a few more along these lines.
There seems to be some interesting things available online as well (I used Google and searched on:
"public libraries" metadata) and found these:
"Dublin Core Metadata in Cooperation with Public Libraries" from MMI-DC Meeting, Brussels 7th-8th March, 2002 By Jytte Hansen, The Danish Bibliographic Centre (http://www2.sub.uni-goettingen.de/cgi-bin/ssgfi/anzeige.pl?db=meta&nr=000619&ew=SSGFI)
"Canadian <Metadata> Forum Metadata in Public Libraries" (http://www.collectionscanada.ca/metaforum/n11-227-e.html)
I hope there are others out there reading this that have some personal/direct experience that they can share!