To enable Tagging in some fashion for our patrons in the Digital Library and in our Endeca Catalog. It might be helpful to review a presentation i gave at journal club in 2006
PennTags announced tagging in conjunction with digitizing audio. The DLC will soon have an a/v server, in case that helps support the grant. There's more on it here. Also, maybe apply for a CITT grant? They've been developing documentation on social bookmarks/tagging, so they may be interested.