Mailing lists are like forums, except that you receive postings via email instead of reading them via a web site. There are thousands of mailing lists, all tailored to specific interests, hobbies, business needs and more.
Mailing lists promote a sense of community.
Not only that, but you can roll your own mailing list for opt-in weekly hot jobs, career questions and the like. Producing your own mailing list is rather easy. Some of the more popular, free software include Lyris and Majordomo . If you'd prefer not to set up actual software, you can take advantage of the many list-creation services like Egroups or Onelist . You can also search for mailing lists at these sites, too.