It's IBM's block-chain is becoming more mainsteam. it's a marketing push about the Stellar network (educational), requires a Coinbase account sign up, but worth it.
New inforormation - you need to invite friends to Coinbase to get 40xlm. so not completely just a quiz.
https://www.coinbase.com/earn/stellar
Since Kilsin allowed this post to live.
my link to get credit is here, I can only have 4 and need 3 more...