A pair of regulatory filings submitted late Thursday revealed that Facebook and Zynga have significantly revised the terms of a five-year deal they signed in late 2010. The new arrangement relaxes restrictions on both Facebook and Zynga, the gamemaker that drove 13% of Facebook’s revenue for the first nine months of 2012

Can you believe that 13% of Facebook’a revenue comes from Zynga games alone? For all the shitty ads we have to endure, somehow Farmville generates more than a tenth of that.

…Zynga investors sent the FarmVille maker’s shares plummeting 11% in after-hours trading.

How does Zynga have any stock value left?