A thought for the OzBargain team. How about a forum topic under Cashbacks for all other cashbacks or coupons so they can be tracked? I think forums is a good place for them rather than the main site. At the moment cashback is just moneybackco/starthere - but there's all those manufacturer discounts and offers that don't really fit anywhere.
It can include links to the redemption form or site, expiry dates, terms and conditions, etc.
It's often hard to find on a manufacturers site how you redeem, or you go in store and the retailer knows nothing about any promotion. And cashbacks aren't really bargains, it's just the icing on the bargain cake :-)