Chinese Olympic organizers acknowledged Tuesday they were struggling to handle an unforeseen and baffling problem inside Summer Games venues and at the showpiece Olympic Park. Two weeks after announcing they had sold every one of the record 6.8 million tickets offered for the Games, Olympics officials expressed dismay at the large numbers of empty seats at nearly every event and the lack of pedestrian traffic throughout the park, the 2,800-acre centerpiece of the competition. (snip) To remedy the problem, officials are busing in teams of state-trained "cheer squads" identifiable by their bright yellow T-shirts to help fill the empty seats...