Most professionals do it and benefit from it.
They find it informative and stimulating to talk with colleagues in their field. When you subscribe to a listserv, you receive, through your e-mail account, all of the messages posted by subscribers to that group. You will be able to post your own messages as well and participate in any ongoing discussions. Kristina provides information on what a listserv is, how you can subscribe and unsubscribe, and what the rules of list etiquette are. She also offers the opportunity to sign up for several lists directly from her page.