It's a DIY to attach an analog meter to a computer and display some data about the air fetched from a website. It would be cooler (and should be easy) to adapt it to display other info like CPU utilization, RAM, bandwidth, ...
it's a site for when someone asks you a question he could have simply googled himself, it's quiet fun. It will give a step by step explanation for the person on how to do the search himself :P i like (6)