San Jose Mercury News: Zynga founder Mark Pincus is stepping aside again to let someone else run the long-struggling social gaming company. The company announced that Frank Gibeau, a former executive with Electronic Arts, will become its new CEO. Gibeau, who has served on Zynga’s board since August, will take over from Pincus on Monday. Pincus, previously the company’s chairman and CEO, will become the company’s executive chairman.