The Wut app makes it infinitely easier to send mass messages. Wut sends messages in the form of push notifications and accesses your contacts through Facebook. This makes it easier to send a short messages to multiple Facebook friends all at once, as opposed to logging into Facebook and creating a group chat.
Since the Wut app sends push notifications, not messages, your friends' phones will display them as such. However, since Wut is also a messaging app, your friends will be able to respond to the messages they receive. Wut currently only works through Facebook, but it wouldn't be shocking to see other forms of social media follow in its lead. The Wut app is available for iOS and an Android version is coming soon.