How to get Red Box free codes

I thought this was interesting and was super curious to see if it worked. So I followed the link that was attached to the pin. It took me to http://www.prettyprovidence.com/2012/04/never-pay-for-redbox-again.html. So here are the codes they had on their page:

Redbox promo codes that work at any kiosk:

DVDONME

 BREAKROOM

REDBOX

Codes that work at Redbox kiosks at specific stores: 

DVDATWAG - Good at any kiosk at a Walgreen's store.

DVDATKROG - Good at any kiosk at a Kroger affiliated store (for Utah it's Smiths)

DVDATSONI - Good at any kiosk at a Sonic Drive-In

So, Excited to see if this works I headed out to give it a try. I love the Red Box and we use them weekly so I had no problem finding a movie I wanted to see. I stopped at the Walgreen's Red Box because it was the closest, picked my movie, used the DVDONME, and low and behold IT WORKED! I finished my transaction and had another movie I was dying to watch so what the hey lets try another. I used BREAKROOM and it also worked. Now she explained these are good once per credit/debit card. So if you use several cards you can get several free movies. She also gave a page where they keep track of the codes that are working and give you new ones so here that is http://www.insideredbox.com/redbox-codes/ .