The Pizza(披萨)Man
It's easy to be attracted by the hundreds of bright notes on the walls of Rosa's Fresh Pizza, especially when you start reading them. "You're worthy of more than a slice," an orange one says. "Make pizza, not war," adds a yellow. A sheet of white paper stands out: "I just want to thank everyone that donated (捐献) to Rosa's. It gave me a place to eat every day and the opportunity to get back on my feet. I start a new job tomorrow!"
The message wall at Rosa's started a few months after Mason Wartman opened the pizza restaurant in December 2013. A customer read that the restaurant served a lot of homeless people, and he asked if he could buy an extra slice for the next one who came in. Wartman took his dollar, wrote a note as a reminder and stuck it on the wall.
Other customers followed suit. And within a week, two dozen notes were hanging up. When the number hit 500, Wartman started keeping track of the slices at the cash machine. But the wall had already taken on a life of its own. Today, it's a shared board where people post notes of thanks given and received.
Wartman estimates that Rosa's has given out more than 18,000 free slices in just over a year. Homeless customers offer to sweep up and take out the garbage to thank him. He has hired three employees through shelters. They're hard workers looking for a chance, and that's who he wants here.
13.By saying "other customers followed suit" (Para. 3), the author means they________.