This is one of my favorites.
Set up your own DEX cryptocurrency exchange in 1 hour by n.exchange [Updated for 2020]
PI is a new and up and coming cryptocurrency.
It is still in the beginning with over 1000 000 members in a very short time.
Exchanges or one more way to make money on cryptocurrencies
Download the App on play store and use the code "ivdm"
Membership is only on invitation.
Use code for invitation.
They reckon it will do better than Bitcoin and will be worth more than Bitcoin.
The people behind it are from Stanford university.
Earn free PI daily with mining.
All you had to do is only sign in ones a day.