When someone clicks your link, subscribes to Groupon, and makes his or her first purchase of $10 or more within 72 hours, you can earn $10 in Groupon Bucks
All qualifying referrals will earn $8 bonus cash after making a qualifying purchase and your account will earn up to a total of $80 bonus cash for these referrals.
Refer one of your friends and when they book, you get an extra $20 off your next flight.