Your comment is pretty unashamedly self-serving and not entirely on topic. Storify was curated, yours intentionally doesn't overlap on the heart of this product.
I don't think there's anything wrong with unashamedly self-serving. All plugs by developers are self-serving, and trying to enforce the veneer of modesty will just cause people to be more subtle and tricky. Better to allow so long as the interest is disclosed (which he did).
So really, the only possible reason to down vote is being off topic (which could definitely apply to this case).
So really, the only possible reason to down vote is being off topic (which could definitely apply to this case).