Controversy over the benefits of screening for breast cancer and prostate cancer hit the headlines and the blogosphere when the New York Times reported on Oct. 21 that the American Cancer Society is planning to temper its proscreening message for breast and prostate cancers, and a prominent representative of the society denied it on his blog.By the end of the day, the society's chief medical officer, Dr. Otis W. Brawley, posted a firm statement that the ACS stands by its screening guidelines."The...