Facebook has issued a clarification of text posted on its official Facebook for iOS app page that indicated the app had more than 100 million active users. “There are currently 44 million monthly active users of the Facebook for iPhone app,” a Facebook spokesman told Engadget. “We recently changed the definition of mobile active users to exclude those who have only liked or commented on stream stories. Instead we are counting ‘active’ users as people who have taken explicit actions within an application. This practice is more aligned with how we count overall active users for the site.” This brings the overall percentage of iOS users who also actively use the Facebook app down to roughly 40%, far from the huge percentage represented by the prior 100 million figure.