Newsweek magazine has announced that it will institute stricter guidelines on the use of unnamed sources after last week's retraction of a Quran-desecration story. But despite the tremendous uproar generated by the discredited story, the magazine says no staffers will lose their jobs. In a letter to readers in Newsweek's latest issue, chairman and editor in chief Richard M. Smith promises that "the cryptic phrase 'sources said' will never again be the sole attribution for a story in Newsweek." Two of the magazine's top editors will be assigned sole responsibility for approving the use of anonymous sources. "We got an...