Recent coverage of Twin includes an interview wuth a librarian:
http://onlinesocialnetworks.blogspot.com/2008/02/twine-semantic-web-is-here.html
Sarah Miller, a librarian at Illinois Wesleyan University in Bloomington, became a member of Twine’s test group in November, partly because she and her husband, Ethan, a doctoral candidate, needed a place to organize all the documents they wanted to share with each other about teaching and learning.
Ms. Miller likes Twine’s mechanized tagging abilities.
“If I save the URL of a Web page into my Twine account,” she said, “Twine will skim the page and turn it into tags automatically. It’s a way to tie together things that my husband and I find over days, and months and years.”
Twine has an option that allows people to do their own descriptive tagging, just as they might, for instance, use the Web service del.icio.us to assign labels to Web sites to help keep track of them.