Some of these girls look young, how did they verify the age of those involved?
I actually like anime (Twelve Kingdoms, and Samurai Deeper Kyo are pretty good, and Cowboy Bebop rocks), but in anime drawings, the characters look young and very stylized, that's the style. I'm thinking that the "age" of people in anime drawings would be subjective.
Also, anime porn is referred to as Hentai.