I once made the site work on an old PDA, but it didn't work very well. I'm not sure whether I could type anything. The chat is flash-based, so all you need is something that supports Flash, I think. I installed Flash on my Android smartphone, but it still said that I needed Flash to chat. In my opinion, Flash is a buggy, unstable, security-hole-ridden piece of junk, but unfortunately, it's also ubiquitous. Maybe someone could make some sort of wrapper or small virtual machine for a half-decent Flash implementation on a mobile device.