If I were a professional in pipes and pipe tobacco, I probably wouldn't post, or only sparingly with tactical intent and approval within my organization. But I would certainly visit and read threads, very selectively, to see what the consumers were thinking and posting about.
If people are commenting on my brand, or the competition, I want to know that. Also, it's useful to know what blends people are smoking. Reviews would be useful, but individual comments would also help. Nothing speaks louder than your sales figures, but comments from the customer base also help. What they do and don't enjoy and what trends are visible count.
If your outfit doesn't pay attention, the competition may. If you launch a big success, just be sure you are set up to meet the demand and accomplish the distribution.