Hi Peter,
A MOTD is something I intend to add, but I have no ETA. Hopefully for 1.8.
There's no feature to message all users, but you could whip up a script or an
extension to do it without much trouble. I'm not opposed to adding such a
feature, if done right, but I think it's best as an
I built an extension just for this purpose, its available at
https://github.com/rajasaur/rb-extension-pack/tree/master/rbbroadcastmessage
Instructions to install are also available in the same page, but if you
prefer a pre-built tarball instead of clone and setup.py install, please
let me know.