MGM Mirage second-quarter net income tumbled 69% amid year-earlier gains and a drop in revenue as guests continued to visit the casino operator's resorts in high numbers, but at lower room rates and with lower visitor spending as a result of the weakened economy. President and Chief Operating Officer Jim Murren said results were mixed, with some properties generating increases in cash flow, adding, "Our own forward-looking booking trends show improvement in the fourth quarter" and into next year.