Just under two years ago, Facebook introduced a web interface for its private chat application, Messenger. Now, Facebook is integrating that same web app into the desktop version of Facebook, where it replaces the older messaging experience.The change has been spotted by a number of users in multiple markets – including TechCrunch staff in the U.S. and Europe – which hinted it was more than a small-scale “test.”Facebook did not make a formal announcement about the change. However, in the comments of a post by Facebook head David Marcus, he’s responding to a lot of feedback about the new upgrade to Messenger within Facebook, and summarized Facebook’s response in this comment.Some users, of course, are demanding the old Inbox be returned. (After all, it seems like every Facebook change must be rebelled against at launch.)

Source: Facebook replaces its old inbox with the web version of Messenger | TechCrunch