This is such a small post, but long overdue.
About 2 months ago I spotted that having taken a photo on my Android device (Samsung S6) I was being prompted to add the images to Google Maps.
This is perfect for Local businesses, and having done it many times since, the view count on some has been in the 1000s.
Google's Local eco-system is going to continue to grow next year, and 'Maps' is effectively a Social app - with Photos and Reviews being the main actions people take, but also being able to send locations via Hangouts too.
It is all about the cross app connections.