Looks like it works for me. I just signed up, grabbed the code, and dropped it into a page.
Hey this is pretty cool! I went ahead and emailed them to see if they offered a direct integration with a Ning membership base so they can login via your network instead of guest or facebook, etc. Here's the response,
They give you the embed code right after you create a profile with them, then you can place the chat where you want it to show on your site, im working on implementing it on mines now but Im cleaning up things so it runs smoothly, too many widgets are no good for your sites speed!