Currently the only blocking happening all across Australia at the country level is that of Interpol listed actual child porn sites and that debate about whether or not that is the right approach is still ongoing - take part in it.

Should the US request the blocking of a non US site that is trading US copyrighted material but not breaking International law I wouldn't assume that Australia would comply with that request. iiNet has already declined to comply with US industry requests to rat out the free trade of US copyright material and various russian sites that charge for access to massive databases of US copyrighted music and movies haven't yet been blocked either.

I live in Australia, yes, I've also travelled the world extensively and I've first hand knowledge of just how backwards many countries are; I'd urge you to maintain your rage and nuture it to maturity and become engaged in Australian policy as that's all that prevents us from being as backwards as you think. Australia has problems, yes, but they are, with various exceptions such as Aboriginal health and community relations, pretty much first world problems.