I unfortunately havent been able to purchase the book, so i will just give a broad summation of videos games, from my perspective.
I have always heard, seen, or read that violent video games promote violence and/or that they are destroying our youth. I personally believe that this isnt the case however. I believe that it is the parents duty to govern a their childrens toys and games. They have the power to control what the child witnesses or is subjected to. I feel that the majority of the children who have such games are products of irresponsible parents. No one is forcing anyone to purchase anything, if they are tempted by ads, then its on them. However, i do understand that in this economic situation, parents are working harder and longer in order to make a living, but you should always put some time aside to talk to your child and find out what games your child is playing.