:Thanks for these studies. Of course it is interesting that child sex abuse and other sex crimes dropped significantly in the Czech Republic when adult and child pornography became freely available (while, somewhat surprisingly, murder and assault rates increased significantly), but these wider and very complex questions are not really what this discussion is about. The argument against having unfiltered hardcore porn in Commons is not based on any assumption that hardcore porn must be harmful to society. The objection is based on the fact that turning Commons into a freely licensed porn site, as Niabot suggested above, does not fulfill an educational purpose, any more than turning Commons into an online gaming platform would. We would gain lots of users by doing either, but it's not our stated purpose for which we are soliciting donations. And secondly, we are alone among top websites in mixing hardcore adult content with generic content, such that a media search for "toothbrush" in Commons or in Wikipedia brings up, at the top of the results listing, the image of a woman masturbating with a toothbrush; while a media search for "drinking" in Commons or in Wikipedia returns a photograph of a porn performer drinking her own urine right at the top of the search listing. Of course we need media to cover sexual topics in Wikipedia, including media illustrating sexual positions, images of penises and vulvas, etc. But the way we are curating and selecting this material is simply unprofessional at the moment.