Someone stated that the problem with PerfectN painting a bikini on his thumbnail (only) is because it "misrepresents" the actual image. In fact, a thumbnail that crops out the nudity part of the full image is just as much a "misrepresentation" of the nudity as is a thumbnail with a painted on bikini. In both cases, a viewer wouldn't know there was nudity until he either saw it flagged as "contains nudity", or clicked upon the actual image. For example, if I saw Acadia's version of the thumbnail, I'd have no idea that the full image contained nudity, any moreso than if it was a thumbnail with a painted on bikini. Indeed, because Rendo allows thumbnails that are a partial clip of the full image, THERE IS NO WAY TO PREDETERMINE THE CONTENT OF THE ACTUAL IMAGE WITHOUT VIEWING IT. And that includes predetermining  nude content via the thumbnail.

Rendo's thumbnail policy is totally illogical. Note: I'm not discussing the issue of "fairness" or anything else. I'm discussing logic only. It's illogical.

Who thinks these things up?

The policy should be changed to "A thumbnail may not contain nudity, and an image with nudity must be specifically tagged as so. In the thumbnail image, either cover up the nudity, or clip it  out of the thumbnail". Anything beyond that (like saying "covering up the nudity in the thumbnail is not acceptable, whereas clipping it out is") has no logical basis in helping the viewer to predetermine nude content.