<a href="http://graphexploration.cond.org/" rel="nofollow">http://graphexploration.cond.org/</a><p>contains terms you want to google:<p>"exploratory data analysis and visualization tool for graphs and networks."<p>---------------<p><a href="http://blog.revolution-computing.com/2009/11/social-network-analysis-on-demand.html" rel="nofollow">http://blog.revolution-computing.com/2009/11/social-network-...</a><p><a href="http://www.foaf-project.org/original-intro" rel="nofollow">http://www.foaf-project.org/original-intro</a>