The app promotions will use the same "Pick of the Week" cards that Apple and Starbucks have been using for music, but this time you'll be able to download a free app instead. The first app up for grabs is Shazam Encore, which would normally sell for $5.99. This seems like a good lead-in to the promotion, because Shazam allows users to identify songs using audio-matching. So, you can buy a coffee, get Shazam Encore, then find out what music is playing in the Starbucks, and buy that from iTunes. It's the glorious circle of consumerism.
Still, a $6 app is definitely a better deal than a song which would normally cost no more than $1.29. It'll be interesting to see what apps pop up on the program going forward.