> We have learned absolutely nothing. Let's all jump on the bandwagon of another closed-source, proprietary, walled-garden service and hand over all of our priv

> We have learned absolutely nothing. Let's all jump on the bandwagon of another closed-source, proprietary, walled-garden service and hand over all of our private intra-company communications to a private third-party in another country. GREAT IDEA. So don't use AWS or Google App Engine or Heroku? etc. Why? I use Facebook for a lot of my communications. Seems to be working out OK so far. Use the tools that help you get your work done efficiently. Consider the long-term consequences, of course, but if someone took all of my Slack team messages and told me I couldn't have them back, I'd be annoyed but it wouldn't affect my productivity much. OTOH, losing the ability to coordinate via Slack, as you're suggesting, would certainly lower my productivity.