Back in 2009, Google released a neat tool called building maker. It allowed you to easily contribute to the quantity of 3D models in Google Earth with some simple point-and-click tools.
Building Maker was a very innovative tool, and was used to create thousands of 3D models that can be found in Google Earth today. However, with the shift to 3D imagery in the latest versions of Google Earth, it seemed that tools like Building Maker were probably on their way out. Last week Google made it official.
Along with Building Maker, Google is closing a handful of other products including Google Reader and a variety of smaller products.
Building Maker is scheduled to be shut down on June 30, 2013. You can read more about it in this official blog post from Google.