Check what Facebook data is being shared and accessible to outside world

To check what Facebook data is being shared and accessible to outside world including those not on Facebook, try typing this URL into your Internet address bar.

http://graph.facebook.com/[USERNAME]

NOTE: Replace [USERNAME] with your user name (no spaces).

A run on Facebook CEO Mark Zuckerberg yields the following result:

{
   "id": "68310606562",
   "name": "Mark Zuckerberg",
   "picture": "http://profile.ak.fbcdn.net/hprofile-ak-snc4/hs443.snc4/50270_68310606562_2720435_s.jpg",
   "link": "http://www.facebook.com/markzuckerberg",
   "category": "Public figure",
   "website": "www.facebook.com",
   "username": "markzuckerberg",
   "personal_interests": "openness, making things that help people connect and share what's important to them, revolutions, information flow, minimalism\n\n\n",
   "likes": 2736148
}

For myself, I am sharing just these:

{
   "id": "XXXXXXXXX",
   "name": v,
   "first_name": "XXXXXXXXX",
   "last_name": "XXXXXXXXX",
   "link": "http://www.facebook.com/XXXXXXXXX",
   "gender": "XXXXXXXXX",
   "locale": "en_US"
}