If you enjoy DigitalOcean and want to share it with friends and colleagues, you can earn account credit and track signups with a referral code, located in your account under Settings > Referrals.
Anyone you refer to DigitalOcean who signs up using your unique referral link receives a $100, 60-day account credit immediately after unlocking their account by adding a valid payment method. In return for helping us spread the word, once the person you refer spends $25 as a DigitalOcean customer, we give you $25 in credit. You cannot receive this referral credit as cash.
There is a daily limit of 30 invitations, but there is no overall limit on the total number of people you can invite nor the amount of referral credit you can earn. You'll see pending referrals on your account when someone has signed up with your link, but has not yet met the spending threshold for the payout to occur.