Just thought I'd pass along this deal in case anyone hasn't heard about it yet.
Sign up for Amazon Mom, and get Amazon Prime free for three months. You can also earn more free months (up to a year's worth) by purchasing items from their baby store. Plus, you get 30% off diaper subscriptions. If you're already an Amazon Prime member, you can even get a refund!
Note: You don't have to be a parent to sign up for this.
Also, you can get a year of Amazon Prime free if you're a college student.