Just remembered this discussion http://news.ycombinator.com/item?id=1218376 http://news.ycombinator.com/item?id=1218376 also featured a force-directed graph lay

Just remembered this discussion http://news.ycombinator.com/item?id=1218376 http://news.ycombinator.com/item?id=1218376 also featured a force-directed graph layout algorithm, with brief paper and all. Just in case you missed it.