Earlier quoted context omitted.
Because other companies don't announce news on Friday at 4:00pm... Or because the White House doesn't make important news announcements on Christmas Eve when nobody's paying attention... I don't think this is a Zynga dick-move. I think this is a typical company move to bury a non-flattering story.
The fact that other organizations also make dick moves does not negate this dick move.
There are many things one might accurately criticize Zynga for, but this is not one of them. If they hadn't done it this way investors would have yet another reason to sell the stock, it would be evidence the company is run by idiots.