As the follower count to HIF's Twitter feed shows, most of you have a Twitter page. If you don't mind making one tweet about Amazon, you can get $5 in Amazon Video on Demand credit for free. Just go to their page and click on the yellow button. That will take you to Twitter, follow the instructions, and the $5 will be credited to your account. You've got until tomorrow, June 19, to snag this offer.