A Shift to Engagement.

As we indicated earlier, today we are introducing new guidelines that will change how applications are ranked in the application directory. Currently, the focus is on total number of users, but going forward it will be based on user engagement. This is an important step in the evolution of Facebook Platform which will help drive the growth and distribution of applications that focus on user engagement and utility.

With a change this foundational to Facebook Platform's measurement, we want to make sure that you completely understand how we will be measuring engagement. We define engagement as the number of users who touch your application every day (measured from midnight to midnight each day).

These touch points are:
- Canvas Page Views
- Link Clicks in FBML
- Mock-Ajax Form Submission
- Click-to-Play Flash

The number of engaged users is calculated by putting all of these touch points together. We display this as the number of "Daily Active Users." Next to it we also show what percentage that is of the application's total number of users.

This change is part of our commitment to making Facebook Platform better for both developers and users. And, we hope that through this change, you continue to focus on creating engaging applications which add maximum utility to a Facebook user's everyday life.