To think about…
		¡ Now that we have free-text searching, do you feel controlled vocabularies are still necessary or not? What do you feel their impact will be in the future of the digital library? ¡ How would you improve the ACM classification scheme?  How to deal with legacy schemes? ¡ Booksellers also need to use classification to shelve books.  Which type of classification do you think booksellers use?  Would you make any adaptations to the classification schemes shown today?