Hate to burst your bubble digital*ghost but check out the Australian Government website. Its states just what I said http://www.immi.gov.au/living-in-australia/choose-australia/about-australia/five-freedoms.htm

Ok, I stand corrected about the basic right, but that still doesn't mean that you can expect or demand eBay to publish your speech, in whatever form that takes. eBay, and these forums,  is not a public arena.