He gets it probably from extrapolating the average of this past quarter and and the quarter before. In the quarter before the last, net income was around -435 million although I doubt their annual net will be -1B
That makes sense. You can't extrapolate from two data points though. I could just as easily claim that their profit is gaining 350 million a quarter an they'll end up with half a billion in profit for the year.
I agree thats its not sound and their is unfortunately a tendency to cherry pick data to support one's story. I'm not bullish on Zynga but I'd agree that using 2 quarters of data (if thats what is being used by the author) is unfair especially for a relatively new company like Zynga.