[qwerty456127]

> Hosting your own server gives you full control.

And exposes you to all kinds of problems to care about including DDoSes, pwners, lawyers, hardware failures etc.

> You can also create a Tor Hidden Service.

So (I feel sad about this but this is how it seems) almost nobody will ever find it, but child porn lovers and other kinds of ultimate weirdos will and you will have hard time banning them.

[LinuxBender]

I agree with all of this. I only mention it because it is one valid option. You would have to find ways to lower the bar to access for your particular community.