I love the "my top 20" tab. Still, I think steemit needs to make the content of special interest easier available then just by keywords. A few months ago I also wrote about having a tab that is called "underrated".
https://steemit.com/utopian-io/@drmake/underrated-yet-another-list-on-steemit
Agreed, machine learning out there like facebook serving up ads to me. Agreed, there should be a tag that is based on tags or people i like. thats what were trying to do. create a tag that is based on subject matter or people. great read