From Red Orbit – Zynga’s announcement it would be abandoning plans to enter the online gambling business in the US had investors cashing in their chips, as shares of the Farmville developer fell 14 percent in Nasdaq trading on Friday. The San Francisco-based social network game developer saw shares close at $3.01 after early trading saw the company’s stock plummet as much as 20 percent (to $2.81 per share), according to CNBC.com and Bloomberg reports. “While the company continues to evaluate its real-money gaming products in the UK test, Zynga is making a focused choice not to pursue a license…