Some are talking about making readers pay subscription fees. But the most radical idea, and the one I find most intriguing, is being advanced by Mark Cuban, a billionaire Internet entrepreneur. Cuban's advice: declare war on the "aggregator" Web sites that get a free ride on content. These aggregators--sites like Drudge Report, Newser, and countless others--don't create much original material. They mostly just synopsize stuff from mainstream newspapers and magazines, and provide a link to the original.