Some recent ratings news no doubt gladdened the hearts of Fox News Channel haters. First, Nielsen Media Research reported that Fox News' overall prime-time lineup dropped 17% last month compared with a year ago (MSNBC grew 16% during the same period, while CNN plummeted by 38%). Late last week, a reliable television industry website, TVNewser.com, reported that in April, Fox News host Bill O'Reilly had his worst month in nearly five years among viewers age 25 to 54, the most coveted audience in TV news. Although the network still churns out ratings light-years ahead of competitors' and O'Reilly remains cable...