Are Australians allowed to visit Nauru as tourists?

I heard media reports a while ago about restrictions on Australians and New Zealanders. Neither smartraveller.gov.au nor New Zealand's Safe Travel issue travel advice for Nauru, and I couldn't visit Nauru's page on visa requirements. The Google cache didn't have a lot of information.

Wikipedia says Australians are allowed to apply for a visa, but I don't know how current the information is.