I notice that not so many know how to that SN uses markdown format and don't know how to use it. A wall of text is hard to read and pay attention.

I agree, if the story/article/post is very long is better to post on SN only a short introduction and insert a link to the full post on a blog or something.

I use to bookmark in SN my own selection of posts (mine or others) and what is interesting is to to check others bookmarks and you see what their interest is (some have none 😂 and hat says a lot about them).