ScienceJohn Schappert resigns as Zynga COODaniel ClarkAugust 9, 2012August 10, 2012 by Daniel ClarkAugust 9, 2012August 10, 2012 The social gaming company Zynga (ZNGA) Chief Operating Officer John Schappert has resigned, just weeks after losing oversight of game development in a corporate restructuring....