My initial reaction upon seeing that is that it sounds like an up front apology. Something along the lines of "Look I know that last post was unfocused drivel, but we had to get something, anything up by midnight or be in breach of contract".

(disclaimer I have not read the blog so I know nothing of its actual quality)

Maybe they did it as a way to make sure they both contributed to the blog in a regular fashion?

maybe it's sarcasm?

It is properly the best guarantee that they will post regularly a new user can expect.

And I would love to hear the story behind it.