Redbox for free?

I saw a pin on Pinterest that said you could get free movies at Redbox so I thought I'd re-post it here.  These are the codes that always work at any kiosk, you can use them once for each credit or debit card you have:

DVDONME
BREAKROOM
REDBOX

And then these ones work at specific kiosks:

DVDATWAG (at walgreens)
DVDATKROG (at any kroger's store, which in Colorado would be King Soopers)
DVDATSONI (at Sonic drive in)

And once you've used all of those, log on to this page: redbox codes and go down a screen and a half or so and you'll see a list of the current free movie codes.  Some of the ones listed there will be the ones above, but there will also be some newer ones, ones that are time sensitive.  At any rate, they're worth a try.  All of the codes are good for one movie, one night.  If you forget to return a movie, you have to pay for the second night, of course.  There's also a place to sign up for a newsletter if you want to, but you don't have to in order to be able to use the codes.  (And if you have a better phone than I have, you can always check for those recent codes right from the kiosk.)

Anyway, hope this helps someone.  :)