As anyone who’s actually worked within a “vertical” knows, whether from a niche consumer or business-to-business angle (or, heaven help them, for a non-profit organization or political campaign), just because a subset of people share a common passion doesn’t mean they’re a single-minded group that can be engaged in one templated way. Every vertical that presents a viable business opportunity is going to have its own sub-communities and overlapping layers, with some often in direct opposition to others.