“What’s become clear from my years of using Slack at work is that it is, first and foremost, a tool of corporate surveillance. Slack stands for “Searchable Log of All Communication and Knowledge,” after all.”
Journalist – Monica Torres
Ephemeral messaging is the key to privacy. In MDO only people in the same room at the same time can see your chat messages. This is the way it works in real life, and it is effective at keeping information private.