I just want to point out that having read that entire page, I still have absolutely no idea what this is, how it works, etc. I have a solution for polling. Its

I just want to point out that having read that entire page, I still have absolutely no idea what this is, how it works, etc. I have a solution for polling. Its called websockets. Even more, there's a well-supported library called socket.io that transparently handles it for all browsers.