- Discussion board
- A site that uses software to allow users to chat via messages posted over time.
- discussion board
- A site that seperates messages by topics, and allows a discussion about them.
Discussion boards are generally considered the precursors to things like Facebook or Twitter. Also known as a Forum or a Chat Group, the most common and popular software in this category is called phpBB. The comment sections on wordpress blog sites, as an example, is a limited form of a discussion board.