If one of your less motivated friends has been inactive for over 30 days, a shaming couch icon appears to the left of their name and a megaphone button to the right.
In the lower left is a button that brings up your current location, and in the lower right is a tiny icon that lets you switch to satellite view, to see public transit and traffic information, or to launch the separate Google Earth app.
Our sites should be consistent and pleasing visually, so our visitors understand the difference between an icon, button or supporting graphical element.