Information that you should not publish on social media!
On Facebook, users can send personal messages or post notes, images or videos to another user's wall. The wall is there for all to see, while messages are between the sender and the receiver, just like an e-mail. Personal and private matters should never be shared on your wall. You wouldn't go around with a bullhorn announcing a private issue to the world, and the same thing goes on the Internet. This falls under the nebulous world of social networking etiquette.