Can I upload my referral code to a coupon site to get more referrals?

We're afraid not. 

Telling your friends about Librio is the best way you can support Librio, because Word of Mouth marketing is the most effective way for small brands to grow. So, please do share with your friends and your social media followers. 

Conversely, coupon sites can be very damaging to small brands. This is because they're not usually used to find new brands, rather to find discounts for products customers would otherwise consider buying at full price. We're afraid we'll have to remove any referrals which come to us via coupon sites.