re: size of his dick.
If he was able to stand naked in front of a big audience and retain a small unerect penis, it means that he was very focus on his role in the play and his nakedness was not a sexual thing at all.
When you look at guys in the locker room, in the end, those with big dicks are so because they have had a few sexual thoughts that increased blood circulation to the penis, while those with smaller penis have had none. When doing sports, it is perfectly normal for the blood to flow out of the penis and go to the muscles where it is most needed.
Also consider that Radclife probably rehearsed enough that being naked is no longer an issue for him. Perhaps similar to being on a nudist beach.
Context is very important. A doctor can touch your penis and it isn't a sexual exercise. And you could have pictures of naked boys in a medical book displaying various aspects of anatomy and growth progress etc, and it isn't sexual at all.
While I respect this board's decision to not allow Radcliffe's 17yo pictures, it can be debated as an issue. For Radclife to perform naked at age 17 in the play, his parents probably had to sign some authorisation. So it was basically agreed that his naked body would become public knowledge since thousands would see it.
In this specific case, one would have very good assurance that those pictures were not taken in any "child porn" context. And there are thousands of witnesses that his naked performances were not part of any "child porn" operation.
However, one cannot prove that such pictures were not posted by someone who obtained them from some child porn site/"ring/operation (and thus would have been obtained by supporting those illegal operations).
So it is safer to block such pictures (since they are fakes anyways). What bugs me though is that despite thousands seeing him naked, there doesn't seem to be any trustable reports on whether he is circumcised or not. He supposedlay has a jewish mother, so it would be interesting to see if the tradition was continued or not.