googlymaps is a world map of googly eyes. People stick googly eyes on postboxes, parking meters, bins, statues and the family dog, then walk off and somebody else finds them and laughs. This is the map of where they all are.
To add a pin you photograph a pair of eyes in the app. The app records where you are standing, the photo is checked, and an anonymous pin appears for everyone. Pins carry no name, and nobody can tell who posted one. Browsing the map needs no account, and the app is free.