New category: "Reaction posts"

If someone clicks on a video, and if I wish to write something additional on the subject, then this label will be attached to the post. History of the blog was attached to the label so as to emphasize that this was a post from the past.

This post may be an exception, as it is a new post. Yet it has the new label.

If you'd like to see posts according to that label, click on the label at the end of each post. I can attach labels to posts already made, so perhaps I will populate the category with the most recent reaction posts.

This is better than including a mention that the post is a reaction to somebody clicking on the post.