Notable offers:
Engie: $200 account credit
Powershop: $150 account credit
Red: $100 Visa eGift Card
I don't think you can do both cashback and referrals. The benefit of using the referral system is you don't have to stay with the retailer for a set amount of time, the downside — it's not cash. The current Engie Black Friday deal is $250+$75 referral if you signed up directly, which is the same as this $200+$125. Too sweet to pass.
Note: you can only get cashback from Econnex once every six months. For Engie it also says new Econnex customers only. Since there is a few days to go, it might worth your time to ask Cashrewards and find out what exactly that all means, if you have used it before.
Note: you can only get cashback from Econnex once every six months.
Is it per Cashrewards account or per Econnex account or per address?