[cnn-photo-caption image=http://i2.cdn.turner.com/cnn/2009/images/10/02/am.intv.oneil.art.jpg caption="Tom O'Neil says Letterman's admission would not be damaging to his audience."] David Letterman's dramatic admission on television that he had sex with staff members started with an uncomfortable moment when he said he was the victim of an extortion plot. His audience seemed to think he was joking but the case is … Continue reading Commentary: Letterman admission not damaging