Creepy tool Marauders Map uses Facebook to map your whereabouts

The Marauders Map browser add-on uses Facebook messages to track your every move

Marauders Map: the Chrome app that stalks Facebook Messenger users

Google Chrome extension Marauders map lets you track your friends

Marauder's Map Guide to Hogwarts (Harry Potter) by Erinn Pascal

Marauder's Map

Marauder's Map (detail) – creepy scrawlers ltd.

Creepy 'Marauder's Map' tool makes it easy to stalk Facebook

Marauders Map” – Is your location being tracked through Facebook

The Modern Day Marauder's Map – The Polygon

Creepy Chrome extension lets you stalk your friends IRL