Wow! What a deal! I wouldn't share this if it wasn't legit.
You can buy a $20 Amazon gift card for $10 on Living Social. I did this on Groupon for a GAP gift card and it worked out great. I bought the Amazon one this morning. If you can get three people to buy one, you get your gift card free, too! I normally don't like using my friends and family like that, but it's an Amazon gift card. We all win!!!!! :D
Here's the link. It's only good for today! Amazon Gift Card Deal