Sort of, but in chatango, if you placed the chatbox at the "home" you can immediately see who's chatting, who's currently on (at the chatbox) and how many people is on the page, including unknown guests.
Another is that you can immediately chat. Although if you don't have an account, your name will appear as Anon. Another advantage of having an account is that you can use it on ANY chatango chatbox littered across the net. And as far as i know, almost all of those anime sites have this.