In my previous role as Chief Revenue Officer for e-commerce startup Spoil, I was intrigued by the possibility that Refer a Friend could be a big win for our sales and marketing goals.In the interest of maintaining speed and focus, I made the difficult decision to use engineering resources to integrate the most affordable Refer a Friend solution I could find: ReferralCandy.Three months and many unplanned, precious engineering hours later, our referral program launched, delivered minimal results and was scrapped.