Here's a cool Google+ feature: mouse over the "currently in" location at the top of a Google+ profile that uses location sharing and something magic will happen: the cover photo will be replaced by a static map that shows that location.
Here's an example of Google+ profile where you can try this feature.
The latest version of the Google+ app for Android added a few new features, including better location sharing. "Starting today you can share your pinpoint or city-level location with others (if you want), and you can do so on a circle-by-circle basis. For example: you can share your pinpoint location with family, and your city-level location with co-workers. You can also use circles to filter who appears on your Locations map."
{ spotted by Jérôme Flipo }