Free 1 month Xbox Live Gold Membership

http://www.bing.com/explore/rewards-xlg -sign up for a new Bing Rewards account with that link. Once you earn 50 credits they’ll send you a code for a free month of Xbox Live Gold.  It will be sent within 2-4 weeks.  You can earn 50 credits very quickly by participating in their tasks, they start you off with 20.