Triond has various sub-sites that all have their own unique domains. One of these, Trifter, looks like a good place to submit something if you are seeking geo-specific traffic. It's the place for travel related articles, and there's a section for Australia.
Obviously, submitting something there would be most appropriate if you have a specifically location-oriented website such as an entertainment guide for a city or town. But other kinds of websites would still benefit.
You've just got to find a local angle. So, say you have a website for a surf shop. You could write an article about all the best surf beaches in that city.
The trick is to include information that is good, unique and relevant, and not just make your article a shameless puff piece. That way you're offering the reader something worthwhile, and the backlink you include is appropriate even if it isn't demonstrably useful.