Facebook is throwing open its Messenger app to third-party developers, letting them add new functions that will make it much more than a tool for communicating with friends. At Facebook’s F8 ...

These instructions apply to the Messenger app on your mobile device. Now, even if you open Messenger to read or send messages, it won't show that you're online. This is a great way to discourage your ...

This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story in ...