A news group works like a bulletin board: a group member posts a message for the whole group to read, and then anyone can post a follow-up message. A message plus its series of follow-up messages is called a "thread"
Mailing Lists (Public email lists):
Another way to get out free advertising is the mailing lists. Mailing lists are a lot like emailed conversations on a specific topic.
A signature file is text that is part of your outgoing e-mail message every time you send an e-mail to someone.
A signature file is much like your signature in a snail-mail letter. But a signature file contains all the basic and contact information about your business! It goes directly below your e-mail message.
Use some or all of these methods to increase web traffic and site visitors to your website