I actually think there are probably a number of technologies currently employed and in development which could be used to filter out . I think it probably comes under the banner of machine learning. Right now google image search comes up with some fairly good 'visually similar images' .
[–] pepelepugh 1 point 1 point 2 points (+2|-1) ago
Come one mate, spanking is a bit much. The sort of thing that should only be used on innocent young boys /s