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Honest Tea marketing managers keep an eye on a self-service Honest Tea kiosk on the Las Vegas Strip Monday, Aug. 13, 2012. Joe Stemmer, left, Josh Cunningham, center, and Ryan Vande Griendt watched from a distance and recorded how many people paid for the tea and how many did not. The Honest Cities social experiment is being held in 50 locations in 30 cities.

Steve Marcus