I was wondering what was the consensus of monarchs in what chat platform they are using in the current age of Utopia?

I would assume now that Utopia has an official Discord server...KDs are flocking to be based in discord due to the amount of people already registered. However I know people may still use Slack or Telegram to take advantages of umunks capabilities.

For people who are building kingdoms...what is the best platform for a 3rd party chat?