@elvismercury summed it up nicely. I would also add that a good way to feel out interest in a topic is to bring it up in Stacker Saloon. I enjoy the space since you can strike up a conversation about anything. You will likely meet people who share your intereats, like a real saloon. You'll discover whether there is interest in a particular topic, and whether an actual post would bring engagement. Also, it's fun.