Is there a way that an admin or webmaster can post the same topic and content accross all the forums?

I don't want users to be asking the same question in different forums, although that could be handy sometimes. But I would like to allow admins or webmasters to post accross all the forums.. News Flash.... Server Going down in 10 minutes.. or whatever.

Could replies be threaded identically in all the forums, no matter which one it orginated from?