by kcwu at csie. org. using graphviz.
Contact me if you don't want to show your nick/relation here.
If you have your own gmail tree, I can include your url.
若你不希望你的名字或關係出現在圖上, 請聯絡我.
Thanks to ericyu for radial graph.

large image(about 2xxx*2xxx,250k)