You can read about SELF Rewards
here. We have realised that people seem to use SELF for finding and buying things, and as there's often a commission that's earned by the platform used (in this case, SELF), we want to ensure that commission is shared with everyone involved, so everyone wins.
Please note, the Amazon partnership is only valid for users in the following regions: Australia, Canada, France, Germany, Italy, Japan, the Netherlands, Poland, Saudi Arabia, Singapore, Spain, Sweden, and the United Kingdom. Users outside of those regions will not be able to earn rewards via Amazon links.