I just learned about Stellar and earned $XLM in return!
5 Learning Modules + 1 Question Quiz per Lesson = $10.00 in XLM
Example:
What is Stellar?
Stellar unites the world鈥檚 financial infrastructure so money can flow quickly and cheaply between banks, businesses, and people
Give your friends the gift of Stellar Lumens
Invite up to 4 friends to join Coinbase Earn.
http://coinbase.com/earn/xlm/invite/hw92nb4d
They鈥檒l get special access to earn XLM, and you鈥檒l get $10 in XLM for each friend who completes a lesson.
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