The Internet provides three major services to its users: E-mail, Usenet News and the World Wide Web (WWW). E-mail is the transfer of information from one user to another in an essentially private communication that has much in common with standard postal services. Pornographic material in this medium is limited to the transfer of picture files and text files and is extremely hard to regulate without gross intrusions into individuals privacy. This service has existed as long as the Internet in its current form. Usenet News is the discussion forum of the Internet, consisting of around ten thousand different 'Newsgroups' dedicated to topics ranging from Adoption to Zoophilia, with circulation in the late 1980s was estimated at 22,000,000 people worldwide. In the late 1990s it is likely to have grown to over 100,000,000, with the quantity of information posted more than doubling each year since 1993. The Internet user can post articles to any newsgroup they choose, in by doing so distribute text, graphics, videoclips, advertisements, or inevitably, pornography. The World Wide Web is the resource most people refer to as "The Internet". It is a method by which Internet users publish generally public information on Internet-connected computers. With around 31.4 million readers and 1.6 million sites in January 1997, the World Wide Web is easily the largest worldwide mass communications medium. With the medium comes the potential for the distribution and advertisement of pornographic materials. This creates a debate over what is censorship and what is really too explicit to be shown to the masses in any public medium. "The Net is the ultimate intellectual jumble. Brainy discussions of physics coexist with sophomoric essays, where sites that present satellite weather images are only a few clicks away from pornographic pictures" (Brody 11). Even the freest of nations find some forms of censorship necessary.