Update: The free Amazon gifts cards for making referrals will end today, Sunday, 11/27. Make sure your referrals have signed up for a free account in order to get the gift cards!
Originally posted on 11/16:
Sign up for StumbleUpon here (Thanks for the referral ;))
Once signed up click here to refer your friends. For every 5 friends who sign up you’ll get a $10 Amazon gift card and there’s no limit to how many friends you can refer!