Well, all we know that forums are good for learning, you can discuss anything in forums if you have any subject, doubt, question, you can get views by others on that subjects.
However, if we talk about in terms of earning good money from forums how do you do it, are you earning from forums or are you able to promote your brand name, services, products in forums?
Forums have also marketing section where you can sell/buy section but I have seen many members that they use other section for marketing purposes but other forum members don't understand what they are doing?