Join one of these to exchange messages on a particular topic of interest with like-minded people. Messages can come to you individually or in groups called digests. Some lists are open so anyone can join; others are closed and only invitees can join.
A list of email addresses, usually of a group of people who use email to hold discussions about pre-determined topics or areas of interest. When one user sends an email to the list, each member receives a copy and may choose to read, respond, or ignore that message.
a great way to develop new relationships with prospects and to continue building realtionships with existing clients - but you have to keep your focus on them instead of focusing on what you're going to get out of it