Earlier quoted context omitted.
It feels like I'm being spammed, there isn't enough time to read the messages and its also getting flooded by people with the usernames flood and flooder.
Ya, I tried to implement rate limiting and failed, this was last night at 3am, so let me try again. If you code you might be able to beat me to it: https://github.com/Mashape/worldchat
I'm going out but when I get home I will see what I can do :)
EDIT: I think using websockets + node.js would be a better idea.