Only word-of-mouth advertising could have accounted for this.

"This is about getting involved with consumers to harness the power of word-of-mouth advertising, so they become the best ambassadors for our brand."

About 75 percent of our business comes from recommendations and word-of-mouth advertising.

The 1,500 specialty shops that are the industry's primary retailers depend heavily on word-of-mouth advertising.

After the first sale, word-of-mouth advertising increased its popularity.

Mr. Green's experience demonstrates why everyone with a product to sell loves word-of-mouth advertising.

For all its presumed power, however, word-of-mouth advertising is a rarely studied phenomenon.

And I think the word-of-mouth advertising for this place will be tremendous.

Sampling can also be less expensive and generate much-coveted word-of-mouth advertising.

Most of the groups are growing rapidly, usually with only word-of-mouth advertising.