Arno M said:
"The article is about a sexual act. I don't see what the problem is with porn in this instance, as long as the site itself contains lots of high quality free material (which this one does)."
The question is again one of minors accessing pages like this one and being shown porn sites through it.
The site in question has an age disclaimer. Are we trying to build an encyclopedia, or an electronic playpen into whch people can dump their kids without supervision?
I see no difference between publishing porn and creating links to it, at least as far as responsible reporting on sexual matters goes.
Given the above:
It also, at least to a degree, threatens to render ineffective the removal of THAT picture.
Right. Removal of pictures from Wikipedia only defers the problem that you perceive.