TheInternet, unlike other media such as TV or radio, is inherently(本身固有的) a'two-way' medium. A company user can communicate to the rest of theworld with easE.It has created a sense of 'global community' that'sfound almost nowhere elsE.People around the world post web sites, exchangee-mail, and participate in on-line chats. Going on-line means not just surfingthe Web and reading e-mail. It means getting involved in the whole Netcommunity.