If you have a Twitter account, you can get a free $2 credit to Amazon Instant Video by going here, connecting your Amazon and Twitter account, and allowing it to send out a tweet that says this: “Just got a $2 credit from @amazon_studios for movies + TV shows @amazonvideo. Click http://amazon.com/studios2u to get yours. #studios2u.”
The credit will be added to your account automatically, and will be available for use through October 31st. Thanks, Mojo Savings.