Casino gambling has been a growth industry in the United States for the past 30 years. The number of states allowing some form of casino gambling has risen from one in about 1978 to around 27 at the end of the 1990's. Casinos can be found in destination resorts, in former mining towns, on riverboats, in cities and in the country, and on Indian reserves. In 1970, when casinos were only legal in Nevada, the net amount of money won by casinos from all customers was $540 million. In the late 1990's these gross gaming revenues had grown to $25 billion. The economic success of casino gambling has been mirrored in the rapid growth of Nevada. Both the state of Nevada and it's major city Las Vegas have been among the fastest growing states and cities in the country over the last 40 years. So, what does the internet on-line gambling trend portend?