Official Google Blog: “Searching on Google for Seattle real estate or homes for sale in San Diego prompts you to enter a location and choose whether you want to buy or rent.* After clicking “Go,” you can see the individual homes that Google has indexed, provided by our partners and culled from the web. When you want more information on a particular home, you can click straight through to the source of the listing—no detail pages or sign-up forms get in the way. And when Google gets the same listing from multiple sources, we show links to all the data providers and websites, ranked according to many factors including, but not limited to, the quality and comprehensiveness of the data.”