Facebook is currently working on integrating its three chat services - Messenger, WhatsApp, and Instagram. They won't merge, continuing to function as standalone apps, but their owner wants their users to be able to message each other across platforms. In order for this to work a huge amount of reconfiguration needs to be done by "thousands of Facebook employees", according to a report from The New York Times today. They will need to change how the apps function at their most basic levels. Mark Zuckerberg's goal is for all three apps to incorporate end-to-end encryption once the...