"The combination of e-mail and word-of-mouth affords marketers a potentially vast, and very powerful, new marketing tool."-quoted from emarketer.com

Email marketing will be a powerful marketing tool in years to come. No internet marketer should overlook this marketing tool. With the combination of word-of-mouth, its lethal.

Read more about email marketing and word-of mouth here:
eMarketer.com - E-Mail Plus Word-of-Mouth: A Marketing Revolution