A wallboard is a type of information radiator that displays vital data about the progress of the development team. Similar to a scoreboard at a sporting event, wallboards are large, highly visible and easily understood by anyone walking by.
Traditional wallboards are made of paper or use sticky notes on a wall. Electronic wallboards are very effective since they update automatically with real-time data, ensuring that people check back regularly.
If you have installed the JIRA Wallboards Add-on, you can display a JIRA dashboard (see Customising the JIRA Dashboard as a wallboard. See the GreenHopper 101 for a quick guide to displaying a wallboard.