Huh, well I guess the PEGI ( http://en.wikipedia.org/wiki/Pan_European_Game_Information ) is a bit easier for people who don't really know about these kinds of ratings, because they directly state the recommended age (12, 16, 18, whatever) instead of a letter that represents an age-rating.
I guess the ESRB
could replace their code with numbers, too, to make it easier for people out of touch of media/technology.
On the other hand, even for those people, it's not too difficult to find out what the letters of the ESRB actually mean. It's more important that the parents actually
care about what media their children consume.
EDIT:
I even saw a parent buying his kid Leisure Suit Larry. When I told him its contents, he was all like, "yeah, but there's no violence is there?"
We need more parents like that. A boob or two never hurt anybody.