CultureA Compliment a Day keeps the Blues awayTo view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoCulture01/20/2016January 20, 2016"Smile at the world and it will smile back at you." This happy slogan is printed on greeting cards and shirts alike. But what about taking the adage one step further and complimenting someone you don't know?https://p.dw.com/p/1EiUTAdvertisement