I don't know about Australia, but there's a page here detailing some of the site...

		256_ 21 days ago \| parent \| context \| favorite \| on: Australia begins enforcing world-first teen social... I don't know about Australia, but there's a page here detailing some of the sites that got shut down because of the OSA in the UK: https://onlinesafetyact.co.uk/in_memoriam/