http://www.abc.net.au/news/stories/2011/06/01/3232865.htm
So there's a Nintendo game that is not being marketed in Sweden because of concerns it would be considered child pornography under Swedish law. It features three female characters "described as being under 18" years old, and the player can look up their skirts and take photos.
Yet the same game is for sale in Australia with a PG rating. (PG stands for "parental guidance", which means it has mild content and can be purchased by anyone.) The only difference in the Australian version of the game is that the age of those three female characters has been removed, so they now have no age.
So it could seem that according to Nintendo and the Australian Classification Board, the way to get around any child porn concerns is to remove the child's or character's age.

