Where can you leave public messages for your Friends on Facebook?

The place where you can leave messages is through the person’s wall. Take note that the wall of the person you are going to send a message to may not always be visible. It will depend on the person’s privacy settings. If the person is your friend and you can access his wall, you can leave a message there that will be seen by everyone whom he has allowed to see his wall.

If in case you truly want to say something to a person, sending a private message may sometimes be more effective. It will depend on how important the message is. Different social media sites have different methods of allowing people to communicate with each other.