This was a normal post. Then the spammers started target it, about two years after it was written, for their comment spam. I wonder how they choose their targets? There was nothing special about this post.
Anyway, any comments against this post will be spam.
This was a proper and normal post on my blog. For some reason it is the one the spammers invariably choose to post their rubbish.
So, as an experiment, I have copied the content of the page to a new one and changed this to see what happens. I also changed the slug, which was possibly a mistake, as it changed the permalink.
Every comment you see attached to this post is, very likely, spam.