The MOO has it’s own set of discussion groups. They operate through the MOO’s mail functions. You can create and maintain groups for any topic you desire. The basic discussion groups in Valhalla are Life, the Universe, and Everything.
Creating A New Discussion Group
You’ll want to read the help, by typing help $mail_recipient. You need to create a child of $mail_recipient, describe the child, set the readers property to 1 (so that anyone can read it), and then move the child to $mail_agent:
@create $mail_recipient named Life-in-Asgard
@describe Life-in-Asgard as "A discussion group specifically for discussing the trials and tribulations of living in the city of Asgard.
@set Life-in-Asgard.readers to 1
@move Life-in-Asgard to $mail_agent
If you want to make the discussion group available only to a certain group of players, follow the help for $mail_recipient.