Zynga has lost one of its biggest players, as it announced that COO John Schappert has resigned. In a statement sent to Fortune, Zynga CEO Mark Pincus confirmed that Schappert had left the company and its board of directors “effective immediately.” He didn’t say why Schappert had left the company, but it sounds like a rather abrupt departure. That being said, Schappert could have decided to leave the company because he was … [Read more...]