Sunday 21 June 2015

What is Usenet?

Usenet is a worldwide collection of discussion groups, each has a name and a collection of articles. These articles which are posted by users who have access to Usenet servers where they will be stored.

Usenet is more convenient than online discussion groups and mailing lists because the articles get replicated to your local Usenet server, allowing you to read and post articles without accessing the Internet. Usenet articles conserve bandwidth because they do not come and sit in each member's mailbox. Email based mailing lists will have twenty members in one office and will have twenty copies of each message copied to their mailboxes. With Usenet discussion group and a Usenet server, there's just one copy of each article, and it does not fill up anyone's mailbox.

Another nice feature of having your own Usenet server is that articles stay on the server even after you've read them. You can't accidentally delete a Usenet articles the way you can delete a message from your mailbox. This way users are able to archive articles of a group discussion on a server without having to have one member do this. This makes Usenet servers very valuable as archives of internal discussion messages within corporate Intranets.

A user then selects a Usenet newsgroup from the hundreds or thousands of newsgroups which are hosted by a server, and accesses all unread articles. These articles are displayed. You can then decide to respond to some of them.

When a user writes an article, either in response to an existing one or starts a brand-new thread of discussion, software will post this article to the Usenet server. The article contains a list of newsgroups into which it is to be posted. Once it is accepted by the server, it becomes available for other users to read and respond to.

A Usenet server does not work on its own. It is part of a collection of servers, which automatically exchange articles with each other. The flow of articles from one server to another is called a newsfeed. Imagine a worldwide network of servers, all working to replicate articles with each other, busily passing along copies across the network as soon as one of them receives a new articles posted by a human reader. This gives the Usenet network its power. Your Usenet server has a copy of all current articles in all relevant newsgroups.

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