i dunno, my paretns have been pretty good with censoring htings, unlesss they wre uber violent, my parents just gave us enough credit to stop watching somthing if we didnt like it.
dad tried to get me to read "last exit to brooklyn" when i was 8 or so. this book is banned in alot of places, it is really gory and not suitible for anyone who is vaugly innocent. but mum stopped him, i just think he thought "this is a good book" and didnt actaully htink of the content.