Clearly we hate telemarketers. New figures from the Do Not Call Register show that as it celebrates its fifth anniversary, more than 7.5 million Australians have signed up for the service.
More than half of Australia's landlines have opted for Do Not Call, along with 3 million mobile numbers. In 2011 alone, 1.6 million numbers were added to the register. Do Not Call doesn't kill all calls -- charities, politicians and businesses you already have a relationship with can ignore the listing. Even so, it's well worth doing. (Registrations last for six years, so make a calendar note when you sign up to remind yourself to re-register six years down the track.)