I'm glad that I did not come off as too much of a jerk. If you think about it there was a lot more that would need to be explained than simply what github.com is.
The network graph could be awesome but for anything with more than 4 forks its just an odd looking subway map.
I did that because I have designers who read my blog and don't know WTF github is. They might be interested in the user experience aspect of the post, but could be completely unaware about source control or github.