Oprah Winfrey hasn't pulled her weight at WW: analysts

Oprah Winfrey hasn't just slimmed down with Weight Watchers -- she's slimmed down her role as the company's spokeswoman. That's the concern from Wall Street analysts, who fret that the billionaire media mogul has grown increasingly scarce in the weight-loss company's marketing campaigns -- despite her seat on the board and significant stake in the...