Forum's for ownership / management communication

I have been using a private forum to communicate with my managers. I set mine up (really paid someone to set it up on the back of a domain) and I admin it. Well, I know that not everyone can do that, so…I happen to be using a forum called ‘Slack’ which seems to work very well (unrelated to the MHP industry). There is a free version and also some paid options that provide advanced and compliance options. I would probably opt for the lowest paid option, but for those that might want a test run at how to communicate with a forum, free is a great number. anyway- Slack is the company name, and if I were starting from point ‘A’ I would probably give it a test run instead of running my own show…