The biggest fail of rent.com.au is Search engine optimization...

The biggest fail of rent.com.au is Search engine optimization (SEO) is the process of affecting the visibility of a website or a web page in a search engine's unpaid results—often referred to as "natural," "organic," or "earned" results. In general, the earlier (or higher ranked on the search results page), and more frequently a site appears in the search results list, the more visitors it will receive from the search engine's users, and these visitors can be converted into customers.

*For the most popular search for rent in Australia website is not in the first X pages!
(stop counting after few, it is AD on first page, but organic search doesn't exist. Some employee is not doing good job for the company. Other SEO techniques missing as well! )

*There is no point to pay ADs all over the place without proper SEO. (Like a throwing money in the hole.)
If you are not in the first 5 forget traffic.(95% of people don't look more then first page. )
Without traffic there is no chance for commercialization.

This is the main reason while this business is not positive.
No campaign can change that until they change the way they are doing SEO.