Zen said: Chatango is more user-friendly and accessible, thus more people will come along, and it also has neat features like avatars and image/colored backgrounds. IRC is pretty accessible if you have something like mibbit set up. It doesn't have avatars and you can't set a background image, but I'm not sure setting a background image is actually a good thing. On the other hand, you can access an IRC channel from any compatible client, rather than just through the website. Overall, I'm not sure a lack of avatars and backgrounds is enough to call something antiquated. It's old, certainly, but it still works well.