I don’t like pimping credit cards, but this is the first time I’ve seen a referral / signup bonus on the Discover Miles card. I got the sheet from my paper statement. The offer says you’ll earn 5,000 miles (worth $50) if you sign up and make ANY purchase within 3 months. Remember, this card is churnable.
Here’s my referral link, which earns us both $50. You can choose to hate me and this post so much that you’d rather earn nothing using a public link though. So you do you.