It's been coming coming, but Facebook told TechCrunch today that the time is just about here -- starting "over the next few days" everyone will need Messenger to chat directly with their Facebook friends on mobile devices (iOS, Android and Windows Phone). Some users in Europe have seen the change for several months, but Facebook claims their positive response has led to the feature rolling out worldwide. Of course, not everyone is going to be happy about downloading a second app to do what one was already capable of -- just ask Foursquare users about Swarm. Facebook says the change will let it focus its development efforts better on the two apps separately, and "avoid confusion" by users. So, are you already in love with Chat Heads and ready to make the swap, or -- assuming you still use Facebook -- is this the final straw in sending you elsewhere for your communication needs?