I've read several articles on Web 2.0 and Library 2.0. Rick Anderson, in "Away from 'icebergs'" does have a good point about our "just in case" print reference collections being obsolete. It's a little scary to do away with our old back-up sources, but if no one is using them, they're just wasting space. Besides, everything is accessible in a more current, updated, and easy-to-find form on the web. How often do we use any of the old print reference books?
He also talks about how libraries often have sources that need to be "taught" to the public. How useful is that? Of course we don't have the manpower to teach every patron how to use databases, if they even show interest. Each improvement and change in web sources has been a little more user-friendly and able to be self-taught.