WiserWiki “is a wiki that will allow accredited physicians to comment, collaborate and update medical information online and is viewable by everyone. The site was originally seeded with content from John Noble’s Textbook of Primary Care Medicine (3rd Edition). In answer to the question, What is the purpose of this site? the site says, “We hope to provide a trusted forum for physicians to collaborate and contribute professional-level medical content that can be viewable by everyone. WiserWiki is one example of our commitment to explore innovative tools to help medical professionals access the most up-to-date medical information available. As of now, the site is still in ‘Beta mode’ as we test new ways to make it better for you as a user!”
There are ads, but it looks interesting.