During the past few months Zynga (NASDAQ:ZNGA) has been experiencing a remarkable turnaround. Until recently the social games maker had been treated as a terminal company. While there are still worries about its long-term prospects Zynga has been enjoying a string of good luck lately. Its latest victory comes in the form of Nevada’s recent decision to legalize online gambling which may potentially encourage other states to do the same. The company’s stock has risen more than 10% today due to investor speculation that Zynga's online ventures could benefit from Nevada's decision.   After President George W. Bush signed ...