Google is hardly the first to help you stitch together a panorama. Apple has a native sweep panorama tool, and Microsoft's Photosynth does an excellent job, too. Where Google Photo Sphere really shines is in its integration with Google Maps. You can geotag your spheres, and share them privately with just a select few or upload them for the whole world to see. If there's part of your neighborhood you really love or a sight that you want to show your friends, you can put it smack dab on a Google Map for them to see.