Hey, i'm not sure if this is correct, but I'm pretty sure the tags on the sidebar are about quantity of people/posts using them. My own frustration is their isn't sub genres/tags. For instance, I like to use #illustration, but that could nest under #art and show up in both but still count as one tag. Some people might prefer Art> Design or Art>Photography or whatever. I'm sure it's the same with other areas of Steemit.

A tool that I think would be useful for curators would be the ability to track tags. Say there is one that there is often quality content in, but you don't remember to check it because it's not on the sidebar list. Tracking or saving tags would really help with the goal of finding lesser known users.

Or maybe these exist and I haven't figured out how to use them, but it should definitely be more user friendly if that is the case.