Come on, people, show your score! Don't be ashame; it's a game.
As a matter of fact, my score was 82, and my average error was 44 miles (just like Phoenix).
I scored 84% with an average miss of around 55 miles.
Although I have to say that the only reason I knew a few were because others around it had formed the outline already. If the map started blank with every state my margin for error would have been much higher.
The first time I did it, I mistook the state of Georgia for Missouri. (I never realized before how similarly shaped they are!) It was the first state up, and I was just looking at the shape and didn't realize it gave the name of the state next to it. I got 90% with an average error of 34 miles. A half hour later I tried it again and got 96% with an average error of 8 miles. Maryland was first up that time, and I placed it a little too far off to count as correct.