I've watched the balance fluctuate through a Twitter account set up to track the experiment. It's been an interesting ride, and guess what--the balance has been as high as $185.
Starbucks gives a thumbs-up to the project. A spokeswoman says: "We think Jonathan's project is really interesting and are flattered he chose Starbucks for his social experiment." You can kep track of the card being used on reloaded via his Twitter feed. || Read "This mobile developer has got your next Starbucks coffee"