A quote from the horse's, that is, the customer's mouth. Boasting is unseemly when we do it ourselves. But when praise comes from a trustworthy source - a client or customer - it acquires a credibility that helps overcome skepticism and purchasing hesitation.
Create a process for consistently requesting testimonials from your customers Good testimonials offer specifics - the what, why and how of your work with or for the customer Don't bury them on a "Testimonials" webpage - spread them throughout the site