A status (also known as a Facebook status) is the latest update that you write on your Facebook wall. This status updates your friends about what you are doing or what you are thinking about (depending on what you have written in that status). Friends can like or comment on your status after you have published it.
A status is similar to a tweet on Twitter, which lets your friends get updated with you. Depending on your privacy settings, your statuses can be private only to you, only to your friends, friends of friends or made readable by the general public.
In a status, you can add a few lines of text, add a link to a site you find interesting, or upload a photo/video. A new status can be created from the main text box on the homepage.