Let the bidding begin for CNN!Commentary: Who can turn around the Can Not Network? By Jon Friedman, CBS.MarketWatch.comLast Update: 12:03 AM ET Feb. 21, 2003NEW YORK (CBS.MW) - CNN has got to be the only television network that creates more news than it breaks.On Feb. 18, Jamie Kellner, the top executive of Turner Broadcasting, of which CNN is a part, resigned, paving the way for former CNN leader Phil Kent to return to power. On Feb. 13, CNN and ABC News broke off their much-discussed merger negotiations. On Feb. 1, news anchor Aaron Brown sparked a firestorm when he didn't...