nanomine.io

Here's what it says on the nanomine.io website:

We use cookies and other tracking technologies to improve your browsing experience on our website, to show you personalized content and targeted ads, to analyze our website traffic, and to understand where our visitors are coming from. When you invite a primary friend, you get 30 % from him or her when he or she makes a deposit, activity and sharing a referral link leads to more bitcoins. When you invite a secondary friend, you get 20 % from him or her when he or she makes a deposit, activity and sharing a referral link leads to more bitcoins. When you invite a Third friend, you get 10 % from him or her when he or she makes a deposit, activity and sharing a referral link leads to more bitcoins. The director of our company comes with many years of experience in this field, so we think that all customers who decide to make a deposit will remain winners.