It's not all that surprising that Imperial County filed a Notice of Appeal. It is asking the Ninth Circuit Court of Appeal to decide for itself whether or not the County has standing to appeal. As I discussed earlier, there's a decent chance that Judge Walker and the Ninth Circuit will find that the official proponents of Prop 8 do not have standing to appeal Judge Walker's decision. While the arguments are different, I also think it's unlikely that Imperial County has standing. But from the anti-equality perspective, it gives them one more argument to make before the Ninth Circuit, so it's important to them.