Why Groupon’s Andrew Mason Had To Wear A Tie…And Mark Zuckerberg Didn’thttp://www.pressednews.com/2012/05/11/why-groupons-andrew-mason-had-to-wear-a-tie-and-mark-zuckerberg-didnt/ by jcc80 • 14 years ago 2 1 14 years agoPRpressednews.com