BBS The documentary series (The BBS is the original ancestor of the forums of today)

http://www.youtube.com/playlist?list...Mj0tIFxsJ-vOkv

That is a set of videos that go back almost 40 years to the birthplace of bulletin board messaging systems.

There was no Internet. There was no chat rooms. Multi user meant more than one person at a time could log in - 1 for each phone line they had dedicated it their BBS system. And all on 1 Megahertz (not 1 gigahertz - MEGAhertz) with a maximum of 64K memory and no hard drive under CP/M (The granddaddy of DOS).

Well worth taking the time to watch.