In many cases, the administration posts messages on behalf of the teachers. However, when they post it is their name showing up in the announcement and they get all the replies.
So, we would like to have the option of posting either anonymously or some other generic course name, or on behalf of other users.
The last one has been posted earlier: Posting announcements on behalf of other users , with the suggested solution that we could use the Masquerade function. For various reasons we cannot give this option to a lot of users (i.e. privacy issues).