and the changes in societal perception regarding copyright, the previous limitation of time and space has, to a certain extent, been removed for some service industry products.

The spectrum of service industries is almost limitless as it includes all types of economic activities that satisfy human desires apart from material goods. The activities are diverse and vary from simple labor to complex knowledge dissem- ination, and from satisfying individual needs to assisting with various other production activities. Moreover, as the scale of the economy gets larger and the standard of living improves, the demand for various service sectors becomes more diverse and rapidly-changing. The categories of service industries have expanded and the activities have become more complex. Producer services, those services assisting a business in conducting its operations, have gained more attention in recent years and play more important roles as they pro- duce new jobs by counterbalancing the job losses

that were created by the declining manufacturing sector. Producer services are also important be- cause they provide high technology jobs for other industrial activities.

Such vast and complex industrial service catego- ries can be classi ed in a myriad of ways. They in- clude service industries that handle the distribution of already produced goods such as in retailing and wholesaling; transportation and communication; and finance, insurance, and real estate that man- ages wealth and finance. Service industries were also extended to include other personal services that satisfy individual service activities as well as business services that help other producer ser- vices, and public services that help individuals and the public to participate in economic activities. A more common classi cation of service industries is the division by groups that demand services (i.e., consumer services and business services). The categories of consumer services include retail, lodging, leisure and tourism industries, personal