Just 35 percent of Blockbuster stores produce 85 percent of the company's earnings, CFO Thomas Casey told an investors conference in New York Tuesday. His remarks were apparently aimed at justifying the continued shut-down of the company's movie rental stores across the country. Blockbuster has said that it plans to eliminate about 400 locations this year, leaving about 3,200 stores. As reported by Home Media magazine, Casey also hailed the deal between Warner Bros. and Netflix that will delay the availability of new films to subscribers for four weeks for 28 days. "It clearly is good news for us, in a sense, we now have product that Netflix won't have for that 28-day period," Casey said.