Even though you dislike online play, you can still play online with the PS3. Some servers are still up and running, and for other titles there are custom servers created by some fans. And the best part: you don’t need to pay the online fee that Microsoft created during the 360 days, which Sony and Nintendo followed after.
I don’t know, I had to use Slack because of a specific customer, and I can’t stand the UI of it.
The way it displays the reply’s… the confusing crap of the workspaces (which each one has it’s own account, and they are independent)… the (lack of?) inline images…