Diffusion experiment

This is a rather clever diffusion experiment, courtesy Matthieu Latapy. If you have a website, you can participate-- you just need to click "spread it" below, enter your url, retrieve the code that will put the image you see below on your website.
FYI, the image you see is the diffusion path of the code, which should change as it spreads.

Thanks to:
http://www.iq.harvard.edu/blog/netgov/eventsannouncements/