I read that Centennial Park in Adelaide has put its mapping online, which in itself isn't that unique. However, the system does allow site visitors to hunt for vacant sites.

According to Adelaide On Line;

"Australians routinely search for homes, cars and careers online, and now the funeral industry is embracing the digital age to allow people to search for vacant gravesites and plot their perfect memorial spot. In what is believed to be an Australian first, Centennial Park has introduced new mapping technology to show where burial plot and memorial plaque vacancies are dotted throughout the cemetery's 40ha site. Operating as a real estate-style webpage for the afterlife, the online system - accessed at www. centennialpark.org - can identify clusters of vacancies for families looking to secure grouped sites, or vacancies in areas pertaining to certain religions."

The full article is here.