Case in point: post #219957 (source: http://www.pixiv.net/member_illust.php?mode=medium&illust_id=585827)
I was confident that post would come through (nice art, nice resolution, no artifacts, and it's anime-related), so when I saw it deleted, it surprised me; that's why I'm asking.
My guess is that posts involving certain copyrights (like Dragon Ball) are deemed irrelevant more easily than others, probably because they are despised by a large part of the community (mods being no exception).
This isn't a complaint about moderators, or anything like that. I only want to know why that post wasn't Danbooru material, to avoid posting irrelevant pics in the future.
Updated by Quess