So do you use BSL or Macaton or does Oz have it's own sign language system?
We use Auslan and Australian Sign English here, but I don't know anyone else who signs apart from my parents who live on the other side of the continent.
I'd go to an Amiga club if there was one locally, or some sort of retro gaming/alternative computing convention. I go to the science fiction/comic/games/anime/pop culture convention in Brisbane every year and I've met fellow internerds from other forums there, but again the same thing happened that always happens, they got all weirded out and walked off.
It's not just being deaf that makes me weird and antisocial though. Plenty of deaf people are outgoing and seem to have no problems making friends, I'm just an oddball.