Thousands of lists in the form of digests, electronic journals, discussion groups and the like are available. When you subscribe to a list, your name and e-mail address are automatically added to the list. You may follow the discussions or join in on them. You can also get a listing of all the members of a list and their e-mail addresses. In working with a mailing list, there is one thing that you must keep in mind.
Every list has two addresses.
Only the software sees these messages. This is where you send the messages that you want everyone on the list to receive. Another important online resource for electronic mailing lists is Liszt , a mailing list directory. Finding Newsgroups Use DejaNews to search for information posted to Usenet.