Essentially my entry for the Moduleoff competition made by Mark Kadin, see the description: http://moduleoff.com/contest/do-something-cool-nodejs
###Demo Page
This module requires Hostip and Visualization API, along with the Node.js Integration module of course.
What it does is it somewhat mimics the behaviors of Google's beta Realtime analytics, that shows current hits on the site and where they originate from. Albeit, Google has a much better handle on this type of feature—but the purpose of this module is to show the ordinary developers can make a module fairly easy that uses Node and a couple contributed modules to do similar asynchronous tasks (like the Realtime analytics) without relying on ajax polling or page refreshes.