As the end of the twentieth century nears, a new medium and tool has emerged as the future of communications, business, news, education, and entertainment. This tool is the Internet, a worldwide network of computers currently connected by phone lines. While it is still in its infancy, its power as a medium is very great, and this is being recognized ever more frequently by the businesses and people it connects. However, it is also abundant with information that is considered inappropriate, adult, and/or vulgar by many people. Many social group ....