(Be sure to check out the List of Medical Wikis.)
Dean Giustini has another really good idea.
Why not leverage social software and wiki technologies to produce the content, free and open for all to share? Develop a librarians-physicians community of EBM practice? If we are concerned about the lack of authority in the anarchic wikipedia model, why not try to move toward a more “expert model” like Citizendium, but do it for medicine – Medizendium?