In this interview Dave Balter explains word-of-mouth marketing. Balter founded BzzAgent in 2002. His company has provided word-of-mouth media services for dozens of Fortune 500 companies and has been featured in The New York Times Sunday Magazine, The Wall Street Journal, The Economist, and on National Public Radio. He is also co-founder and current board member of The Word of Mouth Marketing Association. Balter earned a B.A. in Psychology from Skidmore College. He recently published a book called The Word of Mouth Manual, Volume II. You can download a full (and free!) copy of the book here.