Created in North Carolina by Tom Truscott, Steve Daniel, Jim Ellis, and Steve Bellovin, Usenet was a distributed message board system to share information, software, announcements, and discussions.
Usenet originally ran on UNIX systems using UUCP over 1200 bps dialup modems.
Led by Mark Horton from 1980 to 1987, Usenet grew explosively, from 10 hosts to over 5000.
Brian Kantor and Phil Lapsley revolutionized Usenet in 1986 with NNTP transport over TCP/IP, reducing cost and increasing speed and efficiency.
Usenet lives on as part of the modern Internet, referred to as Internet Newsgroups, Netnews, or Google Groups.