Many people use this media to connect with other people that they know. They can also check the relationship status of their classmate or friends. They can also see many pictures that have been post by some people. You may also post some pictures or text in your timeline, but if you click the public post many people can see it and if they like you post, they can react on it. If your post is important, many people also share it to other, so that their friends can react on it or the might also comment on your post, it is either negative or positive. if they are not agree on what you post, they might put a negative comment. But if they agree or something they might put a positive comment.