What is the Definition of a Forum?

In an typical office break room, there are bullentin board where messages are posted about events or items for sale. In the world of technology forums are pretty much the same. A forum which can be public or private. A public forums allow anyone to post a message, question or comment by creating a user logon. A private forum is only accessible by invitation. Forums are used for all types of discussion from personal issues to technology and even homework help. Basically a forum is a place to discuss issues, convey ideas and comment about whatever. Forums can be organized by topics.