In my mind this little utility is simply just a genius mix. The cross pollination of two of the best resources available on the internet– Google's new mapping service, and the classified listings page, Craigslist. This utility lets you surf both at once– you can select city, price range, and drag along a map while seeing icons representing apartments for rent or sale. It shows you which listings have pictures, and which don't–and even gives little thumbnails of the property. Make sure to use Firefox if you're on a Mac, Safari is a little weird with it.