Medscape from WebMD offers specialists, primary care physicians, and other health professionals medical information and educational tools. The site requires a one-time, free registration after which you can choose the specialty information you wish to receive. Some of the key features of Medscape are original, professional medical content, including review articles, journal commentary, expert columns, patient education articles, book reviews, and more.

Language describing this source taken from: http://www.medscape.com/public/about