Sign up for the service, and you'll receive a daily email listing the discount of the moment. The twist is that the deal only becomes available if a specified number of people sign up (which presumably guarantees the participating businesses a minimum turnout).
Right now, the site is restricted to Sydney, though Brisbane and Melbourne are both listed as "coming soon". Do you fancy group negotiations for a collectively cheaper experience, or would you rather use your own cunning to find bargains? Tell us in the comments.