Redbox: Text DEALS to 727272 every day from 8/15 thru 8/24 to get a new discount code* daily – 

between 10¢ and $1!

On 8/15, check in on Foursquare at any redbox kiosk located at a Walgreens. Once you do, you'll be given instructions on how to get your promo code good for a free one-day DVD rental (good only at kiosks at Walgreens on 8/15/11)!