[Disclosure: Emily and I get a commission for the links to the cards in this post. You don't have to use our links, but it helps keep the blog going, so we're very grateful when you do!]
Did you know you can get free 2-day shipping from dozens of online shops just by having an American Express card?
American Express cardholders get a free membership in ShopRunner, which normally costs ~$9 per month or $79 per year. Once you enroll, you’ll get unlimited free shipping and returns at participating online merchants as long as you keep an AMEX card registered with them.