Facebook comment on website - Also post on Facebook - where is it displayed?

This is a post w.r.t a question I got via Facebook comment on a blog post on "How to add Facebook comments on Blogger site?" in another post (link here). The questions are given below. I won't be able to reply to him with screenshots in a Facebook reply. Hence, this post. And may be it will also be useful as a reference for others too. So, in this post, we will discuss what happens when a