Ever been curious to figure out how connected your website is? No? Well, here is a fine website that shows you anyway. Now, I'm not a programmer, and I don't know the algorithm used to make the pretty picture, but that isn't really necessary. Just type in your website (or any website that starts with "http://") and then look at the fun picture that emerges.
If you are so inclined, you can also check out the artist's art projects (something that I feel is more of a cheap-and-easy way to make money).