If you ever doubted the value of the Internet for being a busybody when it comes to your neighbors, doubt no more.
Web site Zillow.com keeps tracks of estimated home values all over the U.S. You can see what your house is worth as compared to your neighbors. Not only that, you can drill down and find out what your neighbors paid for their houses and when, exactly how big their houses are, and how the houses have lost or gained value in the past years.
The sobering part is...they can do this to you, as well. I guess deep down, we're all curtain-twitching Gladys Kravitzes.