An antipost is when you don’t think “more is more”.
An antipost is when you write something not thinking about the reward.
Oh, wait, I do that often…
An antipost is when you don’t care much about the recommended form: chapters, paragraphs, introduction formula, "please hit the upvote button" staff…
And you start like this:
The discussions about posts and quality content reminded me of a book I've read many years ago. The characters were artists (painters) or related to art. I don't remember exactly the story, but at some point a painting is stolen. The thieves would like to sell it. The biggest problem is that they don't know what price to ask. Because: "How can you say the price if you don't know the value?" This is the problem when establish the quality of a post: who's judging? I think limit of words is an artificial introduced rule in order to ease the decision. I saw post of 100 words cutting like a knife and 750 words boring like hell. Of course it depens on the subject also, some you can't handle in just a few words.
A post is "yours". Story, memories, article, photo. And yes, it could be just one photo. For me, second ugliest formula, after: "nice post, thank you for sharing", is "say something about your photo".