Talk to people. Don't ask them what they want you to build--they probably don't really know. Ask them about the problems they're having, and work with them to

Talk to people. Don't ask them what they want you to build--they probably don't really know. Ask them about the problems they're having, and work with them to solve one. If you've done a good job of that you'll have at least one happy user, and they probably know others with the same or similar problems.