What are the best e-commerce referral programs?

[Earner]

Some of the best e-commerce referral programs come from the big names like Amazon, Shopify and Rakuten. Amazon Associates allows you to earn money when people buy products you suggested to them. Rakuten provides cashback for both you and your referral. Shopify rewards referral with commission on sign up for new traders.  If you are to promote one, will you push everyday items or niche products?