Discovering Clients needs in your market through Online research

Finding the right clients for yourself is a daunting task. As a specialist I always like to know about the type of client that will be benifitted by my services. I have done broad market research in online chatts and forums trying to find out what my market values and how to reach out to them and say "Hey, I have what you need'. Has anyone else have any tips on learning about the inner minds of our clients in a broad sense?