There is another great site for deceased estates and mortgagee foreclosures called Select Property Invest:

http://www.selectpropertyinvest.com.au

They have mortgagee sales, deceased estates, development sites, and commercial listings. You can set automatic email updates for yourself based on the types of properties you are seeking.

The trick with these sites is ensuring the data is up to date. Nothing is worse than finding the perfect property listed and finding out in the next few minutes that it has been sold.