Cash back is a no brainer, provided you were already going to purchase the item or service it's be paid on.......or if it's greater than what you'll have to pay to get the cashback itself.
There are plenty of cash back sites on the web that will help you make the most of your spending, but there aren't too many that do it for Bookmakers and Casinos as well.
The Gambling Times offers cash back at dozens of bookmakers and casinos, all you need to do is sign up using their links and then fill in a simple claim form and you'll get £5 cash to your Skrill account. Better tracking that Quidco and quicker as well.
Not only does The Gambling Times do fivers, they also do £12 cashback on their sites of the month. This month it's Smarkets and 10Bet so that's another £24 of cash back you can claim, just by doing what you would be doing anyway which is signing up for these sites.
If you're not using The Gambling Times for cash back then I presume you're just looking to just gift your account to people, in which case please feel free to sign up to sites through my links..............I just won't pay you anything for it!