I find it interesting to read about this "taboo" because, as a scientist at a public university, the issue is...nonexistent! If you are a scientist writing grant applications with other people (the norm), then you need to know their exact salaries in order to fill out the application. This includes the salaries of people above and below you in the food chain. There is no mystery or taboo in it whatsoever. Working at…
I get the impression though that in general Australia has a fairly similar level of taboo-ness about salaries as the US, it's not something you really talk about with co-workers.