Because the chatbox server written in node.js is running on port 8080.
The chatbox connects to the server by sockets.io on port 8080.
if the port is not open on your computer, you can't communicate with the server.
Could you atleast show me it's not open on your router?
proof of port 8080:
see the; chat.freestylersworld.com:8080 ?
You can even check it and see the beta version of the chatbox.
Enough said.