With today’s launch, Google Maps joins other Google products like Books, Offers and Product Search in having +snippets. And like Maps, what you see onscreen is what you share—just click on “Share...” in the Google+ bar to reveal the +snippet:
We’ll be rolling out +snippets to many more Google products in the future, so stay tuned. In the meantime, we can’t wait to see how other publishers
customize their own +snippets, all across the web.
Posted by Bradley Horowitz, Vice President of Product Management