OK Folks if an image is a repost, you better start doing the following two things:
1: Make a deletion request for the duplicate image.
2: Provide a link or id number for the image it is a duplicate for.
3: Tag the duplicate image as "duplicate".
4: Set the parent of the duplicate image as the ID number of the original post.
Posting a general comment that just says 'repost' and provides no information whatsoever is not only unhelpful in the extreme, but wastes our time when half the time your 'oh so helpful advice' turns out to be a complete red herring and we spend 15 minutes hunting for a duplicate picture that doesn't exist.
I'm going to start banning people that do the single word 'repost' comment shit-and-run if this keeps up, because it seems most of the time it happens, you're wasting our time with a fake repost warnings done outside of the deletion queue. Consider yourselves warned.
Updated by Shatari