I'm Australian, and I created an account just to comment on this issue. Imagine Google News or the Facebook news feed were normal news websites. If you count their traffic as the amount of times people went to those websites just to read news, their raw traffic would dwarf any other news website in Australia by an order of magnitude. Journalistic websites have editorial standards, and at least some relationship and c…
(For facebook it is less clear, because you can't really force people to stop sharing your links)