Zynga Adds 12 Million Users in Two Weeks, Capping 50% Growth Spurt

Social gaming company Zynga , creator of several popular Facebook games including FarmVille, is growing at a pace that would make even its most productive virtual agrarians jealous, adding 12 million players in the last two weeks. The 20% boost in overall users can largely be attributed to FarmVille's 5.3 million active users per day, the most on Facebook, though other Zynga titles like Mafia ...