I think the child posts under post #189464 might be nude filters:
As you can see, that thar's two different sets of nipples; nobody would bother to create a second nude version of the image if one had already been circulated by the original artist, so I can only conclude that they're both nude filters created by different people.
But since I could be wrong, I'm impartial to just out-right deleting them, so I thought I'd ask here.
Updated by Ars