Mobile Couch: A New Way Of GivingTimes are tough and tips can make a lot of difference for some workers.
Columbia Grad Launches Electronic Tip Jar For The Credit Card EraWorkers who rely on tip jars to bolster their incomes have noticed a dip in tips because of an increase in the use of plastic for purchases. To combat the problem, new technology called DipJar has popped up in some cafes and shops across the city.

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