In recent years, a number of medical organizations and institutes have created sites that feature weekly podcasts, and this particular one from Johns Hopkins Medicine is a nice find. Started in October 2005, each podcast lasts from five to seven minutes and features a "lively discussion of the week's medical news and how it may affect you." Past topics have dealt with the risks of not immunizing children, the use of fish oil in people who've had a heart attack, and drug coated stents. As might be expected, visitors can subscribe to the podcast, so that they will receive each new edition as soon as it is released.