News today of an attempt by the Canadian government to get a German ISP to censor a political parody site that was critical of the Canadian Government.
I'd be wary of making too much of this in relation to the Australian debate for several reasons.
The Canadian Government agency does not have jurisdiction over the German ISP and there is no suggestion, as far as I can tell, that they asked the German Government to assist with the censorship action. In other words: the Canadian Government wasn't using its monopoly on the use of force on Canadian soil to force the German ISP to act in a certain way.
Secondly, the collateral damage caused to the 4500 sites is most likely the result of incompetence on the German ISPs part, rather than the Canadian Government's part.
Yes, it does illustrate the dangers of a Government that thinks it can throw its weight around, but it doesn't really have too much to say about the Australian debate since it wasn't a case of the state acting against a commercial entity within the state. It was a case of an agency of a state asking a commercial entity of another state for assistance. One can argue that the German ISP should have told the Canadian Government to bugger off, but that is a different argument.