I think there is waay too much easy accessibility to porn for young people. I remember being 12 and curious and looking at hardcore porn on my friends family computer. I also used to go into internet chat rooms and cyber with people because I was curious.
Looking back it was not good and my parents were so oblivious. A 12 year old should NOT be able to cyber with grown men after school. We did all sorts of weird stuff to experiment without and clear boundaries. I think that's why I was such a late bloomer, I was terrified of penises!
As an adult I think porn can be awesome and healthy, as a young person there is way too much access to weird stuff out there. Nothing wrong with a few nudie pics but full on porn? I don't see how it can be healthy.