Shopback is doing another referral promotion but instead of offering $10 to both referrer and referee, the referrer receives a nice $15 whilst the referee only gets the standard $5 sign-up bonus:
For a limited time ShopBack rewards you with a $15 bonus for every qualified new member referred. You will earn a TOTAL of $15 bonus ($5 automatic bonus + Extra $10 bonus) for every friend referred successfully. Those referred must make an accumulated min. spend of $20 by 11.59pm AEDT 4 December 2019 (Extended from November 24 2019) for you both to qualify for the extra bonus. The Extra $10 bonus will be credited into your ShopBack account by 10th February 2020. ShopBack reserves the right to terminate this offer at any time without prior notice. Users qualify for this bonus promotion on an individual basis per email account on ShopBack; no accounts can be combined in order to reach the qualified friends requirement.
Credit or money?