Hi, Being an Australian resident, and holding an Australian Business number, I have the ability to purchase and target the Australian web. If anyone would like to invest 50/50, or talk deals such as I own the domain, you run the site and give me say 25% of profits, lets talk. Cheers!
Something important to remember, when buying a .com.au domain, try and also buy the .com as well. Many people will miss on the .au part and may think of your site as only .com. Otherwise you could be advertising someone elses site.
Interesting proposition.. there has been quite a bit of talk over .com.au domains of late.. I was reading a thread a few days back on this topic.. maybe do a search for Australian domain and you should find it..