Thank you for the info. I do find some posts with only one tag sometimes. So as obvious as it seems to us, number five is really an important one. I myself haven't been on twitter so this tagging element was foreign to me till I joined steemit and it was only when I came across posts about tagging that I realize how significant this step is to get more exposure. Knowing the topics that are underserved is really an interesting one as I hadn't thought carefully on this. The examples you provide are great! This is a clearly, well-presented and organised post. Thank you for making it so easy to read and understand. I am resteeming this!