What is an electronic bulletin board and what is it used for?
This is a communication tool that is designed for participants to post messages for others to read at a time that is convenient to them. The messages are arranged by topic and subtopic so that you can follow the flow of conversations and find things when you need them later. In many cases this tool will also have a search feature. There are topics for conversations which contain a series of postings and responses from participants to each other.