Amazon sucks
I bought some DVDs last year. I finally get this email about their unbox videos. While I am on there looking at it I notice that it says I have some free credits. Cool I think. Well after a couple days of wrestling with their software I go back and WTF...no credits. Turns out they expired the same day I got the email. No amount of talking to CSRs would get them to credit them back.
Told them to erase all my information, I won't be doing business with them again. Not that they care, obviously...