You are looking for what Steve Blank calls "Customer development" (http://steveblank.com/category/customer-development/ http://steveblank.com/category/customer-

You are looking for what Steve Blank calls "Customer development" (http://steveblank.com/category/customer-development/ http://steveblank.com/category/customer-development/) He suggests that you schedule 15 minute interviews (no sales pressure) with a range of people in your target marketplace. Ask them about their pain points and try to come up with a solution with them. There is a lot more detail in the essays I linked to about what to do next.