Have you noticed a trend at small businesses? A notice at the cash register of your favorite bakery, hair salon, or your local diner that reads: “We will impose a surcharge fee on all credit card transactions.”Sister station WTAE asked a well-known small businesswoman in Pittsburgh, Pennsylvania, about her own choice.Kelly O, of Kelly O’s Diner in the city’s Strip District, says it’s part of her business’ continued recovery after the pandemic.“I’ll be honest, I started thinking about the money I was paying for the processing fees and decided that I can’t anymore,” she said. Kelly O said the processing fees used to cost her thousands of dollars. That’s why she has instituted a 3.5% surcharge on credit cards at her restaurant.One family who spoke with Pittsburgh’s Action News 4 sits on two sides of the cash vs. credit debate. “I’m not a cash person; I’m much more of a …