I've seen it on a lot of websites, it's a free live chat you can put on Web pages.
You can modify it and add rules, and you can add moderators and what not.
Here's the link for the help section on Chatango.
I'm looking for some support on this idea, if anyone is interested in a Chatango Chat for Mangahelpers.
I don't think that'd be helpful to the forum as it'd most likely cut down the forum's activity or posts. People will try to talk on Chatango more and will bother to post less, so the activity may or will suffer. That's just my opinion though.