This video tells the disturbing story. While Matt Simmon's may have been an alarmist or attempting to push an agenda...I do believe that the heavy use of dispersants is similar to the heavy use of HFT or manipulations that are occurring in the financial world. The problems looks like they are dissipating but they are really still there...most of the oil in the gulf has NOT been eaten by oil eating bacteria or evaporated...it has been dispersed and has sunk to the sea floor.