The system computer which receives news articles from other networks is called the news server. Since all of the articles take up space, the system administrator will at some point delete the old articles. The system administrator also decides which newsgroups to make available to local users. Unlike mail, you do not automatically receive news articles in your mailbox. You must access them.
All newsreaders have the same basic features.
Newsgroup Hierarchies Newsgroups are organized and named hierarchically. An example of a newsgroup is sci.bio.ecology , which discusses ecology and related topics. An article may appear in a single newsgroup, or it may be cross-posted to many newsgroups. There are approximately 20,000 newsgroups available, dealing with a wide range of topics. Deja News is a popular search engine used to access newsgroups.