A Broadcast Mailing list is a list you can subscribe to in order to get information about a topic or business. It is a one way communication. The subscriber is not able to reply. The administrator of the list is the only one who can post to this mailing list.
Broadcast mailing lists would be a good resource for students that want to have current information on a topic. They could search and find a list that meets their needs and then all they would have to do is check their e-mail to get updated information.