If I were you I would really hold off on that short position... I know quite a few of zynga ex employees that sold today... I found out later they did...
I'm sure more selling will happen tomorrow, but I do think we may not see the low 5's... I think you might be taking a bit of a risk at short selling especially since Pinkass (this term should hopefully stick now) is presenting at a conference tomorrow and till friday.. who knows what will come out of that hypocrites mouth... it may be good news, in which case you just got hosed...
News 
Market Data 
Discover 
