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System Message 1.7

As per fery's request the extension allows a user with the right permission to setup messages that will be received by the users they specify. It comes with a fully-functional admin panel to allow easy writing and editing of messages. You may specify a group of users with certain roles to receive the message or just a group of users. The message will appear only once to each user and you will be able to see how many users have read the message.

And if that wasn't enough, it even uses funky Mootools effects for extra coolness!

Can be used with the Mootools extension for increased performance and javascript compatibility.

Remember: You need to assign yourself the correct permission before you can access the System Message admin panel from the Settings tab

And finally, this can technically be used with other themes but the admin panel is styled to look like the default theme. If you care enough to change it to match your theme you can edit css/admin.css. If people send me stylesheets for different themes, I'll be happy to implement some functionality which switches between them based on your forum's theme.