If you are in the Financial services industry oampssuper.com.au would be a great Super Blog.
If you sell white goods including the Omega and Smeg range of products. This domain is perfect.
With the history behind this domain name you have a great start with putting together a community of online catholics.
If you are an occupational therapy specialist and operate in NSW this is the perfect domain for you. Have a look at it's history.
If you are interesting the the Gambling industry then overtheodds.com.au would be a great site to add to drive some new traffic. Great keyword rich domain name.
If you are a breeder or Sell Horses in Australia, this domain will be a great addition to increase your online exposure.
If you have anything to do with Holiday Accommodation and Tourist Destination, this domain is great. With 56 Backlinks from 23 Domains a great start.