For genuine friend-to-friend recommendations, I'd rather refer a friend of mine to make a purchase through Quidco and have them claim back the full referral fee themselves (minus a £5/year subscription), than pocket the referral fee myself.
If I was linking to a larger group, why should I go through Referly and not set up an affiliate account direct with the merchant? In the UK, at least, there are large networks like AffiliateWindow, CommissionJunction, etc. that allow you to sign up with numerous merchants using a single interface...