List Managers Lists are owned and managed by a list owner. This individual is responsible for the rules and operation of a given list. On some lists, you need to contact the list owner regarding problems with the list. There are a number of types of lists. On a public list, anyone can sign on and off at any time, ask questions, and use the services provided by the list.
Lists can be private, limited to a specific membership.
Private lists are usually by invitation only, and you must be approved to join. There is more control with a private list. Usually the information contained there is private and can be accessed only by members of the list. Occasionally, lists are moderated. Postings must go through a moderator who will screen, modify, and post the messages to the group.