I think that Australia is the alter ego of either DogLovingJim or DogLovingJim is the alter ego of Australia.
As far as I can tell, they're the only two members of TCS who never upthumb other peoples' posts. This tells me that they must both be missing their thumbs, and that's got to be a pretty rare condition.
Moreover, DogLovingJim hasn't been burned by Australia. Oz will tell you that it's because DLJ always has pictures of dogs, but it's perfectly possible to burn a dog's face. This tells me that Oz has an objection to burning the faces of dogs. Why? Because he's DogLovingAustralia.
What I cannot figure out is whether Australia is DogLovingJim trying to escape from Kansas via an alter ego (because going from Kansas to Oz, totally has never been done before), or whether DogLoving is Australia trying to escape from the land that burned off half his face.