Facebook has added a “reviews” feature to all Facebook applications, where you can rate an application on a scale of 1-5 stars and also write something about the app. Additionally, similar to the Pages set up by brands (such as this one for Mashable), you can now become a “fan” of an application.

Nick O’Neill of AllFacebook thinks that these changes will eventually lead to an improved directory for applications. He writes:

“I have a funny feeling that Facebook may eventually use these reviews as a method for displaying “highest rated applications.” This will make the application directory even more efficient for browsing.”