In the courses I teach I advise students about using Wikis and other socially constructed forms of media for their research. I often provide them with good and not so good examples of on-line "authorities" they should, or maybe should not, use when conducting research or writing papers. It is important, I think, to help students become connoisseurs of the resources they use so that they can be appropriately informed. I always suggest they know who or which organization is responsible for what they are reading and the process it has gone through to be published on the web.
For many, the internet has replaced books, and people, as sources of authority in the sense of the truths, facts or ideas upon which our culture relies. It's even difficult sometimes being a professor when internet resources are viewed with such unquestionning belief.
So what of the geography books in the elementary school library to which children have access when, perhaps, they are completing a project on a European country? My suggestion would be to simply move them into the 'History' section and advise students to use the internet to find out what life is really like in England, France, Sweden or Germany.