So what you're saying is that if somebody created an article [[goatse.cx]] or somesuch, with an encyclopeadic writeup, and got permission from the copyright owner, then that would be fine by you?
There is already a goatse.cx article, without the image. I think the description of the image is more than enough, furthermore, posting material that can be classified as pornography can get us into legal trouble. To pick a somewhat less offensive example than goatse.cx, say we wanted to illustrate articles about porn movies -- sooner or later someone is probably going to write them. I don't think we could legally complement these articles with pornographic screen captures, even if we wanted to.
If Jimbo wants to take the risk, however, I'm all for it.
Regards,
Erik