Facebook announced this week they are offering a new feature which gives you the option to “subscribe” to one another’s status updates and news feeds. There are two different classes of subscribers: your friends and everybody else. Your friends are already subscribed to get your updates as they always have, and you, in turn, are subscribed to their updates.
If you choose to allow public subscribers, then those people will only see the content you share that is marked public.
The new setting lets Facebook operate more like twitter by enabling people to “follow” public figures, will have an important effect on sharing, etiquette and the way people connect on Facebook.