Zynga should have sold it back for 300M-400M.
And you'd be pretty late to the party:) The short interest ratio on them is already .8. Thought its less than it was a couple of months ago.
But I doubt one more competitor in the gaming industry would have a substantial impact on Zynga's long-term health. There are so many competitors already, many of whom create smash-out hits. Zynga does not anymore. OMGPOP's existence or non-existence won't change that.
If that was the idea, their execution was flawless.