I think the book they are talking about, which is out of print, crosses the line. Naked little boys bent over with their bottoms to the camera? And these aren't little bitty boys, they looked preteen to me in the pics someone posted.
I think, in this day and age, having any questionable pics of naked children is asking for trouble.
I don't think the book, by itself, proves anything. It's a combination of things makes me think MJ is guilty.
So . . . what's "questionable"? Any rear shot? The Coppertone girl? A whole genre of art pics should be burned? How about our shots of our kids in the tub? If a prosecutor is going to decide what's "questionable", ANYthing will be.