[CM30]

So at what point does a private business become a 'common carrier'? Because pretty much everyone agrees a business can chuck someone off the premises for just about any reason, and most internet forums and communities end up being more about 'what the owner wants to allow' rather than anything else.

Do you suddenly lose the right to tell people what they're allowed to say or do if your community becomes popular? How about if it's the leading resource in a field of study, or half the population end up using it?

Because this is what's bugging me about these arguments. Why can a community like a forum, mailing list, Usenet group, Slack group or subreddit choose what people can say and block comments for any reason, but say, Facebook gets criticised for the same thing? They're all communities, they're all privately owned...