Kim Hong-Ji/Reuters
Starbucks is expanding its new credit card tipping system across the US. Some workers say they're making hundreds of extra dollars per paycheck. Others say it gives customers another reason to be rude and yell at workers.Starbucks now allows customers to tip by credit card in many stores, and workers are split on if it's a good thing or not.
When customers pay with a credit card, the machine now asks them if they would like to add a tip before they pay. Previously,...