Frankly I'm all for censorship of certain things until a certain age...
never mind that age is about 10, and that certain things include some of the worse swear words and most sexual content.
Other than that, I highly disprove of ratings of any kind, due to the fact that it is up to parents on how they want to introduced to profanity, and that kids, weather you like it or not, are going to find almost everything you don't want them to by the age of 13.
I'm really disgruntled towards people who are trying to protect the "innocence and youth" of children, because, honestly, it really only exists for a short time, and trying to hold away thing that your child should learn about naturally will probably cause serious problems later in life. I, for one, would defiantly not like to be restricted from porn by my parents; it would drive me crazy. And any parents who believe that their 13 year old kid is "innocent" is naive, simply put.
However, keeping certain ideas away from children till a certain age is really important as well, which leaves me angry at people who don't try to control their children's use of swearing and profanity; they need to be old enough to understand what situations that it's acceptable in. (again, I feel that that age is around 10).
Overall, though, as polar opposites that I've listed above may not make the best decisions, it is ultimately up to the parent to decide what their child can and can't do, and as such should do research into a movie, game, etc that their child wants to take part in/ buy... not leave it up to some obscure rating system.
The fact that shows are being prosecuted based off some obscure rating system that shouldn't even exist in the first place leaves me fuming. I'm defiantly going to do some more research on this...