This may be an interesting day in the history of censorship in Australia. According to an article on news.com.au, the government is going to be discussing if a R18+ rating needs to be implemented for video games.
While I am opposed to censorship in general - believing that all information should be accessible to anyone who is seeking for it, I believe that not implementing the R18+ rating is just an indication that the Australian government has not caught up with technology, and is still living in the past.
I do believe that kids should be protected from certain content, but this should be done by role models (ie. their parents) - and not regulated by a governing body "for the good of all". As history has always show, what starts off as a great idea (eg. protecting lives on the road by limiting the speed of vehicles travelling on it), will get corrupted over time (eg. revenue raising via speed cameras - or "road safety camera" as the government will lead you to believe).
Let us all hope that the correct decision is made...