There is a possible domino effect in the place of the communist domino theory of the 1950s. There will be an unstoppable southward move to Australia. Silly people say that PNG will not be suitable. What naivety !! Any port in a storm.
BBC NEWS | South Asia | Pakistan's Shia-Sunni divide
The refugee boats intercepted by ships of the Royal Australian Navy will have refugees taken on board and dumped on the wharf at the PNGDF naval base on Lombrum on Manus Island. Too easy.
It may well be that there is not a problem with land on Manus. Most boat people may well be urban dwellers who want to live in the towns. Gay men among the boat people will want to disappear into the anonymity of Australian cities.