Interested in doubling your sales? That is exactly what Proctor & Gamble did with their Dawn Direct Foam dish detergent. How did they do it? With a word-of-mouth marketing program called Vocalpoint. According to a recent article in BusinessWeek, this is how it works:

Procter and Gamble looks for customers that match their target criteria, in this case moms and particularly those with large social networks. They find most of them by advertising online and through referrals. Participants are asked to talk to their friends about new products. In return, P&G promises a stream of new product samples, "a voice that is going to be heard," and specific messages to share. So far 600,000 moms are participating.

According to Steve Knox, the CEO of Vocalpoint, the most difficult challenge with word-of-mouth marketing is making it predictable. His solution: find a strong reason why a person would want to share product information with a friend. The article goes on to say--and this is very important--that the message given to the participants is always different from the one P&G uses in traditional media.

For example on the Dawn campaign, traditional ads stressed the grease-cutting power, But the message sent to the Vocalpoint mom's focused on how fun the foam was for kids to use--so fun they would be asking to help wash the dishes. They also received a sponge shaped like a foot and a dozen $1.50 coupons. The result: sales in the three test markets were double those in markets where Vocalpoint was not used.

Sound expensive and difficult to manage? I don't think it has to be. Here are five simple steps to get your Buzz Force going and your sales increasing:

1. Make it worth their while. Proctor and Gamble offers two things: product samples/discounts and a sense of empowerment. Both make their participants feel like a VIP or an "insider." That is your goal. Price the coupons such that you will be happy to see your "buzz force" using them and remember the pay- off is not just your participant coming back in with the coupon but the friends they are talking to and the feedback they are giving you.

2. Invite your customers. The need to invite is obvious, the method can vary. Proctor & Gamble places ads to attract those interested. That can be expensive. Why not just invite your customers as you complete your transaction with them? There are several ways to do it. You can start by asking for feedback and then follow that up with an invitation to stay in touch. Another option is to invite them to join a birthday or some other kind of club and then develop the relationship from there. Finally, is the direct approach. "Interested in joining our fan club? You get discounts and sneak previews you can pass along to your friends."

3. Give them a message worth telling. Hopefully your business is so remarkable that your customers will be anxious to tell their friends about you, but don't leave it to chance. Remember Proctor and Gamble always gives their buzz agents a specific message that is easy to share with friends. Put yourselves in your customers' shoes--what would be an easy way for them to tell their friends about you? Maybe it is "privileged" information: "Did you hear Subway is coming out with a new sandwich?" Maybe it is a great deal. "Hey, next time you need a hair cut let me know, Sport Clips gives me great coupons." Or maybe it is something just plain remarkable, "I got two movie tickets today from my insurance guy!"

4. Give them another message worth telling. This shouldn't be a one time campaign. Stay in touch regularly. Those who have "opted-in" want to hear from you. The more ideas you give them to talk to their friends, the more likely one will work for them and you'll start seeing their friends.

5. Listen and Learn. Perhaps this one should have been first rather than last, because it is very important. Those who join your buzz force can become your best source of market intelligence. They know and like your product, they know how people react to your product, and they are willing to put some effort into your product. Ask them what they think and listen carefully. Look to their feedback for message ideas and ways to improve your offering. How do you think the Proctor and Gamble folks figured out kids like the foam? It didn't happen in a board room.

Still sound like a lot of work? There are tools that can be used to greatly streamline the time and effort required to manage a word-of-mouth marketing program (Caution: shameless plug approaching). PromoterZ is one such tool. In simple terms, it gives users a quick and inexpensive way to invite participants, gather feedback, send messages (including online coupons), and even includes an easy online way for the buzz force to pass the word to their friends. It handles the logistics so that you can focus on the message.