Usenet can be superficially regarded as a hybrid between email and web forums.
over a decade before the World Wide Web was developed and the general public received access to the Internet, making it one of the oldest computer network communications systems still in widespread use.
It was originally built on the "poor man's ARPANET", employing UUCP as its transport protocol to offer mail and file transfers, as well as announcements through the newly developed news software such as A News.
The name Usenet emphasized its creators' hope that the USENIX organization would take an active role in its operation.
The blue, green, and red dots on the servers represent the groups they carry.
Arrows between servers indicate newsgroup group exchanges (feeds).