Has anyone tried RumbleTalk Chat?

I've tried it using a freemium account. I like how easy it was to set up and integrate the chat into my website. I also love how the chat layout can be customized via CSS and how easy it was to switch to different types of chat rooms. There are still some features I haven't tried yet and the chat skins available are kinda old school but overall, I'm quite satisfied with the chat plugin.