That's pseudo-persistence, and it's only as stable as the client or bouncer. HipChat and Slack provide actual, stateless history, so you can reboot, logout, sig

That's pseudo-persistence, and it's only as stable as the client or bouncer. HipChat and Slack provide actual, stateless history, so you can reboot, logout, sign in from a mobile device, whatever, and pick up where you left off, with notifications in the meanwhile.