I've used the cashreward site for about a year and the experience hasn't been too positive. They don't always capture my transactions, especially the the big ticket items, for example when I bought items from asos or eBay that total $30 to $50 the transaction is accounted for, but when its items from $500+ cashreward never accounts for these transactions. I've followed all their instructions and when I contact them to follow up they can never trace the purchase and simply send a generic email response.
Are they pocketing the "reward"? What have Ozbargainers experienced?
Surprisingly, it has been a good experience for me using cashrewards. I had a massive auction win with graysonline, it took a long time but eventually they did get the cash back after a few emails, $200 bucks worth so it was worth it.