That's tentative I feel. Anyone can go to https://webchat.freenode.net/ https://webchat.freenode.net/ and join a channel someone posted the name of, "join ##cha

That's tentative I feel. Anyone can go to https://webchat.freenode.net/ https://webchat.freenode.net/ and join a channel someone posted the name of, "join ##channel_name_here on Freenode". Registering with the nickserv and what not? For some I'd agree but it's not entirely obscure.