Inspired by http://bl.ocks.org - this is me trying to learn d3, especially regarding the interactive node stuff.
If you see me doing something bloody insane - don't pity me, or laugh, teach me the right way!
This started with a flat-out copy-paste of one of Mike's force-directed tree demos - http://bl.ocks.org/mbostock/1062288
No promises are made as to how functional it will be before I get distracted by bright lights and pretty colors.