Complex sentence: The online campaign, launched in March 2011 by a land tax lobby group Prosper Australia was a response to rising property prices and warned potential home buyers of the moral and financial hazard of buying late into a property bubble.
Split into simpler sentences: The online campaign was launched in March 2011 by a land tax lobby group Prosper Australia. Prosper stated that it was a response to rising property prices and a means to warn potential home buyers of the moral and financial hazard of buying late into a property bubble.