"By showing only the links in the graph, we can get a far better look at the structure than if we include all the nodes. In this image, we are looking at the core of the blogosphere. The dark edges show the reciprocal links... the lighter edges indicate a-reciprocal links. The larger, denser area of the graph is that part of the blogosphere generally characterised by socio-political discussion... above and to the left is that area of the blogosphere concerned with technical discussion and gadgetry." [Hurst, 2009]
Hurst, M. [2009] Data Mining: Mapping The Blogosphere. [online] http://datamining.typepad.com/gallery/blog-map-gallery.html
