Skimpier volleyball uniforms may have something to do with the sport's Olympic popularity, says the US pro beach volleyball tour CEO, but so did the stunning American gold medal win.

CEO Joseph Saunders says Visa's two-decade associaition with the Olympics has helped make the card company no. 1. That and the 45 million cards now in use in China.

China is already the second largest market for Nike, where President Charles Denson says the firm is going to be opening almost a store a day.

Travel to China is more common and less expensive than a decade ago, but visitors need to know some important information about entering -- and leaving the country.