Facebook allows you to send messages and post status updates to keep in touch with friends,family and associates. You can also share different types of content such as photos, links, and more. Sharing something on Facebook is a bit different from other types of online communication. Unlike email or instant messaging, which are relatively private, the things you share on Facebook are more public, which means they'll usually be seen by a lot of other people.
While Facebook offers privacy tools to help you limit who can see the things you share, it's important to understand that Facebook is designed to be more open and social than traditional communication tools