Walter, John,
Just to add to the Sunfish remarks:
CASA will also sue individuals for defamation, if they get the chance, it is a bit hard to toss the Federal Government as a litigation funder.
Even under various states' and Federal "reformed" defamation law, truth is not necessarily an absolute defence.
Even under my handle on this blog, I am careful not to write anything that is defamatory.
"Freedom" in Australia does not have the same meaning as under the US Constitution, more's the pity.
Right now, there is a raging controversy about "freedom of the press", it is a controversy that could not happen in the USA.
Tootle pip!!