Went to the Royal Melbourne Show and came across the Commonwealth Bank stall at the Woolworths Fresh Food Pavillion. I was pleasantly surprised to learn that by simply having the "Kerching" application on iphone or android, the attendants upon seeing the app, will send you a $10 payment to your CBA bank account for free. If you dont have the app, download it there, show the attendant and they will send you a payment code for $10 bucks through "Kerching".
My mate went to the stall a couple of times across different days and found that the payment code can be sent multiple times (ie. you can keep going there and getting the attendant to send you another unique code for a $10 payment), he managed to rort the system and score $30 bucks. all for nothing. a good way to score some free cash to spend on showbags or overpriced rides and/or daggy dogs.
Kaching