As an entrepreneur bootstrapping your business with a small or no advertising budget, you are left with no choice but to depend on word-of-mouth advertising to grow your customer base. For some types of businesses, such as clothing companies and tech gadgets, this serves as an opportunity for them to do something remarkable with their design and/or packaging. For other types of businesses, such as service providers and digital sellers, generating word-of-mouth buzz is a more complex problem to solve.