Looks like this may be
DEAD. Reports that the referral changed to $10 for the referrer and $10 for the referee.
Conga chain:
1) Use the referral link below to open a coinbase account.
2) Edit the Wiki (EDIT button above) and copy the following text "WAIT - IN PROCESS OF SIGNING UP", and paste it below the current link.
3) Buy at least $100 in bitcoin
4) Get your referral link from coinbase and replace the current link below. Remove the line you pasted.
Once the next person uses it to buy at least $100 in Bitcoin, you receive $75
5) You can withdraw the bitcoin to your bank account. Keep in mind that the exchange rate does fluctuate.
ONLY NEW ACCOUNTS ARE ELIGIBLE. PLEASE DON'T POST UNLESS YOU'RE SIGNING UP A NEW ACCOUNT WITH REFERRAL LINK LISTED HERE.
You can get a report of referral activity here:
https://www.coinbase.com/reportsClick New Report and select Referral History as report type. Then download the Excel report.
Current valid referral link:
https://www.coinbase.com/join/563a4fdea6fb3900ad00029d