Recent years have brought many changes to the world of mass media. The In ternet and mobile communications technology have provided consumers with interactive digital services. Television is catching up with this trend through the digitalization process. Digital television is a hybrid platform combining elements from classical analog television and the Internet, providing modern multimedia services on a familiar platform. In short, digital TV is a gateway to the world of interactive digital media. Digital TV brings consumers into the television service arena and offers them new degrees of...