If you're active on social media, there is a good chance you have come across this man. In recent weeks, the Namdaemun scarf seller has become an unlikely online sensation, drawing attention for his witty exchanges with customers. Known online as "Namdaemun scarf man," he runs a shop called Hanyangsa at Namdaemun Market, South Korea's oldest and largest traditional market. He sells scarves from an outdoor display, where shoppers can pick any six for 10,000 won ($7.50). His quick wit and an uncon