That's pretty, but it doesn't look viral. One expects to see one point going to somewhere between 1 and a large number which spreads to somewhere between 1 and a large number and so on. It should look more chaotic and more like a fractal I'd think. This looks like one fan spread it to a huge number. So I'm guessing there is missing data e.g. the first fan getting too much credit.
The point was to see the web of virality, but if everyone uses the same url instead of generating one via the "Share" link on the page itself that falls apart. If you copy-paste the url from HN to facebook, for example, then the HN sharer seems to have originated all of the Facebook inbounds.
