How can I get money from facebook

Have you ever thought how can I make money from Facebook. As we know Facebook is a social website with a very very huge user base, you can promote your business using Facebook as it is very helpful to targeting right person by your needs.       Facebook has a tremendous potential to make your business popular, if you are a bit technical from programming point of view then you can develop your Facebook applications using already developed Facebook API's . You can use your friend circle to get your business hit. This way you can get your business hit and utilizing lots of users for your personal benefit.