Found this deal today, if you are an existing member at westpac you will get the annual fee waived (in the first year) for the credit card and get 50,000 points when you spend $2500 in 90 days. i just signed up to an online esaver account then applied for the card as i was not an existing customer.
edit: for new customers open the Reward Saver account to avoid monthly fees.
I'm pretty sure that the people signing up for this via ozB are going for the free points and/or balance transfer … and will pay off the balance within 55 days each statement period and then either cancel or re-negotiate upon 364 days, making it a good deal.