One of the biggest challenges of any development agency or company is to understand the needs of their clients or customers. This course presents a variety of qualitative tools to help discover from the poor themselves what types of services, products and financial offerings they need and for which they would be willing to pay. As both NGOs and corporations seek to serve some of the three billion potential clients, it is important to have quick, structured ways to dialog with the poor. Through triangulation of tools and methods, a researcher can find out what the poor feel that they need to solve their problems and improve their lives. The social entrepreneurs, who seek to reach those at the bottom of the economic pyramid globally, first need to research if there is effective demand for their new product or service.