Originally Posted by tubemonkey
As to the mystery credit, keep in mind that you don't necessarily have $5 to spend in each category. If the $5 credit is a general digital credit, $5 will appear in each category. Any amount you spend up to $5 will reduce your balance by the same amount in all categories.
FYI - I wasn't receiving the offer on my Kindle Keyboard, so contacted Amazon via Chat. The rep. eventually applied the credit directly to my account without sending me an e-mail. I now also have $5 credits listed for Amazon MP3; Amazon Instant Video; Kindle Editions; and Software/Video/Games Downloads.