Hypnorgasm said:
Question about that: if a post doesn't have a proper parent post, but you want to hide it from the front page, what should its parent be set to? Eg if a post has been deleted, but still shows up on the front page.
Since it is a temporary assignment until a mod comes up, which even at worst is less than 24 hours, I don't think there is a huge ethical or practical concern here.
I guess there is a justification for uploading a dummy post, making it and the concerning post parent posts of each other, then getting them both removed at the same time, if you we are That dedicated to accurate grouping of images at all times.