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Computing a facility on a computer network allowing any user to leave messages that can be read by any other user, and to download software and information to the user's own computer
bulletin board[′bu̇l·ət·ən ‚bȯrd]
A collection of information that is stored in a computer system and can be accessed either by a specified group of people or the general public, usually by dialing a number on the public telephone system.
A surface used for the display of announcements, information, and the like, usually attached with thumbtacks.