Thing 17

Here a tag, there a tag, everywhere a tag, tag. Old McDonald had a tag...

Seriously, I'm not sure if I agree, disagree, or feel a bit of both about this folksonomy article from the NY Times, but tagging would make searching library catalogues much easier, especially for patrons, so that's a major reason to support it even though it's a bit controversial at the moment. Oh, and I'm sorry for disturbing your slumber, Mr Dewey.