Have you tried looking for a Sydney-area subreddit? Brief look suggests that /r/sydney might be worth a look. I think you'd have more chance at finding redditors on reddit itself than on here.
"The fact is, I don't know where my ideas come from. Nor does any writer. The only real answer is to drink way too much coffee and buy yourself a desk that doesn't collapse when you beat your head against it." --Douglas Adams