Here are the steps to get your free $3 Amazon Video on Demand Credit:
1. Click here
2. Click on the “Tweet and Get $3″ button
3. You will be prompted to connect to your Twitter account
4. Click on the “Allow” button
“After completing these steps successfully, browse for a movie or TV show at Amazon Instant Video, and click the “Buy” or “Rent” button.
• Although the price shown on the “Buy” or “Rent” button will not change, your credit will automatically be applied to your purchase.
• After your purchase, you can confirm that the credit was applied by checking your order confirmation, which will be sent to you by e-mail.
• To receive this offer, you must click the button above to follow Amazon Instant Video on Twitter and tweet the above message between April 27,2012 at 12:00 AM PST and May 1, 2012, at 11:59 PM PST.
• Offer limited to one promotional credit per Amazon.com customer.”