Free Redbox Codes!

There are quite a few codes out for free Redbox rentals right now.  They are also running a Thanks A Billion Giveaway to celebrate a billion rentals.  When you rent a movie, go to the Redbox site and enter the code found on the disk.  You will automatically receive a code for a free rental and be entered for a chance to win a trip to the People's Choice Awards or a Sony Home Theater System.  The first 1,500 people who enter will also receive a free t-shirt that will be mailed to you.  Here are some free codes to sweeten the deal:
DVDONME
BREAKROOM
DVDKROG (Kroger locations only)
DVDATWAG (Walgreens locations only)
DRIVEIN (Sonic locations only)