Everybody knows how powerful word-of-mouth and buzz can be. Lots of ink has been spilled about all the nice things that happen when people are talking about your product.
But this is a little bit like explaining the nice things that rich people can buy. It is obvious that good results are good. We don't need to be told that. What we need to know is how to make those good results happen.
Word-of-mouth is not a strategy. It is the result of a strategy.
How do we make it happen?