Just learned from 投资理财 forum, Google map also shows Foreclosure. haha, interesting!
but some of the data there may not be the most updated :)
Google Maps Foreclosure Listings
1. Punch in any US address into Google Maps.
2. Your options are Earth, Satellite, Map, Traffic and . . . More. (Select “More”)
3. The drop down menu gives you a check box option for “Real Estate.”
4. The left column will give you several options (You may have to select “Show Options”)
5. Check the box marked “Foreclosure.”
Haha, this feature has been phased out in 2/2011.
http://google-latlong.blogspot.com/2011/01/retiring-real-estate-on-google-maps.html