Sean,
I won't listen to 'em if they do. I reckon there are always folks who project their own worst motives onto others without looking to see their own faults. The process you describe--discussion, reflection, testing ideas, thinking out loud as you help others--sounds like the creative process to me. That in this way you should discover something others want to enjoy too is a natural outcome. And deserves encouragement and congratulation, by the way.
there are those that will jump up and down saying that this was my plan all along i.e. to string along the various forums, build up a reputation via visibility factor and then launch a product line
I won't listen to 'em if they do. I reckon there are always folks who project their own worst motives onto others without looking to see their own faults. The process you describe--discussion, reflection, testing ideas, thinking out loud as you help others--sounds like the creative process to me. That in this way you should discover something others want to enjoy too is a natural outcome. And deserves encouragement and congratulation, by the way.