Library Map Mashup Wikipedia 
Museum 2.0
APRIL 18, 2008
Institutions like the Library of Congress and the Powerhouse Museum are getting thousands of quality tags and comments on previously hidden away images. Want to plot all the Wal-Marts on a map over time ? Efforts like Freebase , which hopes to be the wikipedia for data, are giving communities the ability to collaboratively share data.
Beth's Blog: How Nonprofits Can Use Social Media
APRIL 18, 2007
Unlike library subject cataloging, which follows a strict set of guidelines, tagging is completely unstructured and freeform, allowing users to create connections between data anyway they want. Nonprofit organizations, libraries, and educational institutions are experimenting with "user-generated" or community-powered campaigns.
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