2.26 Usenet

Usenet is a world-wide distributed discussion system. It consists of a set of "newsgroups" with names that are classified hierarchically by subject (topic). "Articles" are "posted" to these newsgroups by people on computers with the appropriate software. Articles are similiar to email messages in structure and type of transport mechanisms, but handled by different instances on a computer. Articles are intended for public discussions rather than personal communication and are broadcast to other interconnected computer systems via a wide variety of networks. Some newsgroups are "moderated"; in these newsgroups, the articles are first sent to a moderator for approval before appearing in the newsgroup. Usenet is available on a wide variety of computer systems and networks, but the bulk of modern Usenet traffic is transported over either the Internet (NNTP) or UUCP.

This is exemplified in Animation 2.26-1.