Remember that you don't need to be a UK resident to use quidco as they pay by Paypal, as long as you earn less than £50 ($70) a month. Sign up using a fake UK address, they don't send you anything.

The only risk is that ICG is relatively random in when it makes payments, so if you a heavy stayer you can never guarantee that your earnings will be under $70 a month because it depends entirely on when ICG pays up.