Amazon’s Friends and Family Gifting feature gets more social today with the launch of a tool that allows users to create and send group gift cards to your Facebook friends for their birthdays. By connecting Facebook and Amazon accounts, it’s easy to prepare birthday gift cards in advance, and participants can contribute as little as $1 or as much as $25 of yet. The gift card is delivered to the recipient’s Facebook wall on their birthday. It’s a new, foolproof way to ensure that you never miss a friend’s birthday again.