Interesting article and map in Zillow on home value changes

There's an article on Zillow that includes a map and shows the year over year housing value change using colored diamonds to allow you to get a really clear picture nation wide. No surprise to anyone keeping up. Florida, California, and the east coast appear hit the hardest (I.e values down) with a few down pockets around Detroit, Chicago, Green Bay and Minneapolis also down 13 to 20%, and Ann Arbor Michigan being hit especially hard. Prices across the heartland and mid south appear to have held value pretty well. How does that expression go? Our strength is in the heartland, or something like that.