For awhile now we've hosted https://try.nodebb.org/ as our demo instance for people to see a plain NodeBB instance.

I have added a federated category on that instance now. You can of course still make test posts to this instance, but you can also feel free to fill @federated@try.nodebb.org with garbage instead :laughing:

Please note that the "try" instance of NodeBB is reset every 24 hours, which means all follow relationships, content, etc. will only last at most that long. If you follow the category or an account on that instance, those categories/users will "forget" you followed them.