A bulletin board is a surface, usually cork, for posting public messages such as notices, sales and events. The term also names the computer bulletin board system, a dial-up server that let callers read and post messages, which preceded modern online forums.
Both meanings feed into today’s self-hosted community tools, which revive the idea of a shared board that a small group owns and runs itself.
What a physical bulletin board is
The older meaning is a physical one. According to Wikipedia’s entry on the bulletin board, it is a surface intended for the posting of messages, and public ones may advertise items wanted or for sale, announce events, or provide information. British English prefers the terms pinboard, noticeboard or notice board.
The design is simple on purpose. Boards are often made of a material such as cork, so that messages can be added and removed easily, and some pair that with a writing surface such as whiteboard or blackboard. A board that combines a pinboard and a writing surface is known as a combination bulletin board.
The same source notes the range of uses: sports groups, extracurricular groups, local shops and official notices all rely on them. That breadth explains why the name carried over to software. A physical board has no gatekeeper beyond whoever owns the wall, anyone nearby can read it, and anything posted stays visible until someone takes it down.
How the computer bulletin board system began
The digital version took the name and the logic. A bulletin board system, or BBS, is described by Wikipedia’s article on the bulletin board system as a computer server running software that allows users to connect using a terminal or a terminal emulator. It is also called a computer bulletin board service, or CBBS.
The first public dial-up BBS was developed by Ward Christensen and Randy Suess, members of the Chicago Area Computer Hobbyists’ Exchange. According to an early interview cited there, the two began preliminary work on the Computerized Bulletin Board System during the Great Blizzard of 1978, when Chicago was snowed under. Christensen had a spare S-100 bus computer and an early Hayes internal modem to work with.
CBBS officially went online on 16 February 1978, and it reportedly connected 253,301 callers before it was retired, though the source flags that count as needing a citation. Treat the figure as an unconfirmed estimate.
Smartmodems, networks and the BBS boom
Hardware set the pace. Early internal modems were usable but expensive, because manufacturers had to make a different modem for every computer platform they wanted to target. A key innovation for popularizing the BBS was the Smartmodem from Hayes Microcomputer Products. It used a small microcontroller to watch the data flowing into the modem and react to certain command strings, which made dialing and answering calls something software could control. The 300 baud Smartmodem led to an initial wave of early bulletin board systems.
In the early 1980s, message networks such as FidoNet were developed to provide services such as NetMail, which is similar to internet-based email. Many BBSes also offered online games where users could compete with each other. A hobbyist with a spare computer and a phone line could therefore run a small community and exchange messages with other boards.
During the early 1990s, a number of mid-sized software companies were dedicated to BBS software, and the number of BBSes in service reached its peak.
Why the dial-up boards faded
The decline was quick. The introduction of inexpensive dial-up internet service and the Mosaic web browser offered ease of use and global access that BBS and online systems did not provide. That led to a rapid crash in the market starting in late 1994 to early 1995. Over the next year, many of the leading BBS software providers went bankrupt and tens of thousands of BBSes disappeared.
The idea survived, though. The same article says bulletin board systems were in many ways a precursor to the modern form of the World Wide Web, social networks, and other aspects of the Internet. Message areas became web forums, file libraries became download sites, and door games became browser games.
Where the bulletin board survives today
Today, BBSing survives largely as a nostalgic hobby in most parts of the world. It remains a popular form of communication in Taiwan, where the PTT Bulletin Board System is the best-known example. Most surviving BBSes are accessible over Telnet, so hobbyists connect with a terminal emulator much as callers once did with a modem.
For most groups, the practical descendant is not a retro BBS but a web community. Threaded discussion boards are covered in the guide to forum software, and the federated social-media route is described in the explainer on how to run a mastodon instance. Each keeps the core bulletin board idea: a shared space, a posting rule set by whoever runs it, and messages that stay readable by the group.
Physical boards also remain useful where people gather in person, such as shops, schools and clubs, because they need no account, no power and no maintenance beyond pinning and unpinning.
What the old boards teach modern communities
The history offers practical lessons for anyone starting a shared space today. A BBS was small by design: one machine, one operator, and usually one phone line, so only one caller could connect at a time. That limit shaped etiquette, since people kept sessions short, read new messages first and left a note before logging off. Small communities built on that scale tend to develop stronger norms than large platforms do.
The operator also held real authority. Whoever ran the machine decided who could join, which topics were welcome and when a thread had run its course. Modern self-hosted communities keep this arrangement. The owner sets the rules, controls the data and answers directly to the members, with no advertising model between them.
The BBS era also showed how fragile a community can be when it depends on a single technology. When cheaper internet access and the web browser arrived, callers moved within a short span, and many boards closed because members left rather than because the software failed. Groups that plan for portability, such as regular backups and exportable member lists, are better placed to move if their needs change.
A physical board adds one more lesson: visibility matters more than features. A notice pinned beside a shop door is read by everyone who passes, while a message buried in a long thread may never be seen. Online boards benefit from the same habit, using pinned announcements, short titles and a clear place for new members to start.
Choosing between the meanings
- Physical board: best for local, in-person notices where passers-by are the audience.
- Retro BBS: a hobby project for people who enjoy terminal-era software and Telnet access.
- Modern web community: the usual choice for ongoing discussion, with moderation tools and searchable history.
Frequently asked questions
What is a bulletin board?
It is a surface, often cork, for posting public messages such as items for sale, events and information. The same name was used for computer systems that let users post messages remotely.
Who created the first public dial-up BBS?
Ward Christensen and Randy Suess of the Chicago Area Computer Hobbyists’ Exchange developed it, and CBBS went online on 16 February 1978.
Why did BBSes decline?
Inexpensive dial-up internet service and the Mosaic web browser offered ease of use and global access, causing a market crash from late 1994 to early 1995.
Do bulletin board systems still exist?
Yes, mostly as a nostalgic hobby, and many are reachable over Telnet. The source notes that in Taiwan the PTT Bulletin Board System remains popular.
