Earlier this week, casual gaming juggernaut Zynga received yet another outside investment of an undisclosed sum of money. A number of news outlets speculated on the aforementioned sum and what it's done to the company's bottom line -- for instance, the Wall Street Journal (via Develop) reported that the investment was worth $250 million, valuing the company at somewhere between $7 billion and $10 billion. All Things Digital says the investment was for $500 million, and claimed (alongside the New York Times) that the company is worth "nearly $10 billion."