According to the website, "The Government Education Portal points the way to authoritative online resources, news and events about education and training in Australia." I searched for 'Downes' (that's how I test such systems) and obtained exactly two results. I couldn't find a list of sites indexed (seems to me an OPML list should be a basic requirement these days). No RSS feed either, so there's no way to find out when new materials have been added. You can suggest sites; they must be "relevant to Australian education and training, apolitical, and non-commercial."