Track the location of your Facebook friends.

Do you use Facebook's messenger? Yes, I'm talking about Messenger. This time, the author of a clever little browser extension for Chrome shows how you can easily check the geographical locations from which messages were sent to you via Messenger, even dating back two years. The plugin, called Marauder's Map, can be downloaded from the official Chrome Web Store. It works by simply extracting the location data that is sent along with messages via Facebook Messenger. How do you use it? After installation, go to your messages menu (instructions on how to use the map should appear).  ;-)