Interesting to note that Australia is a signatory to the UN's Universal Declaration of Human Rights which advocates free speech through any medium, yet the Australian Parliament never wrote it into law nor has Australia a Bill of Rights.
On saying that here is a interesting quote from the Australian Governments Immigration website, which is actually incorrect,
Australians are free, within the bounds of the law, to say or write what we think privately or publicly, about the government, or about any topic. We do not censor the media and may criticise the government without fear of arrest. Free speech comes from facts, not rumours, and the intention must be constructive, not to do harm. There are laws to protect a person's good name and integrity against false information. There are laws against saying or writing things to incite hatred against others because of their culture, ethnicity or background. Freedom of speech is not an excuse to harm others.