Promoters and detractors are terms that have been popularized by the Net Promoter Score® metric, which is used to measure customer loyalty. Promoters are highly satisfied and loyal customers who act as evangelists for your brand, while detractors are displeased customers who not only will abandon ship as soon as they can but will also let everyone know why they are displeased with your business and its products and/or services. But let’s take a closer look at these two categories of customers and how they can help your business thrive or cause it to crash and burn.