geotagging--mapping

I've had fun with smoe of the different mapping on the computer. I frequently use the computer to get driving instructions... I've also zoomed in on classmates--classmates.com... I didn't actually take the time to do this one at work.. but I knew this one was available, in different formats, and many different uses. there is a site that lets you look at your neighborhood and price the houses -- this seemed more important in a better economy.--