The Board Messages plugin allows you to place important messages in your
forum header so as users see them quickly. Messages can be displayed
globally or on the forum index only.

This plugin integrates with the MyBB theme system giving you complete
control over the look of each message by way of the board_messages.css
stylesheet which is added to the theme editor on plugin activation.

If you are upgrading from a beta release of this plugin, please see the
included note about upgrading.