Have you ditched Dewey in favor of an alphabetical subject arrangement of nonfiction? Have you genre-fied your fiction collection?  Do you think either or both of those are terrible ideas -- or are you mulling it over.  Check out the AASL Blog http://www.aasl.ala.org/aaslblog/?p=3461  and join in the conversation that got started on AASL Forum, expanded to a HOT TOPICS panel discussion at Midwinter, and will be the theme of the November/December 2013 issue of Knowlege Quest.
 
Hilda