Take $10 off $50 at Amazon with Bill Me Later

Here's a great tip from The Bargainist:

Register with Bill Me Later to pay for Amazon purchases totaling $50 or more, and they'll knock $10 off your bill. Apply coupon code BMLSAVES when checking out, after choosing the Bill Me Later option. You'll then receive a bill and have the choice of paying in full, or over time. Be aware that finance charges apply when paying over time, making that great deal you found not such a great deal in the end. Subject to credit approval. Offer valid through 07/21/2008