The unique thing about this site is that it shows information via a timeline for a person and includes the sources used for the information. Click Here to see an example. The cost to subscribe is quite cheap - $A33 for a year, and could cut your research time down quite a bit if you have a convict. You can search for FREE.
A very interesting non profit site that includes people who were born quite early in the colony as well as convicts. Hope it adds to your research options for those early Australian Ancestors.