Existing tools that visualize web network data

heatmap_egHere’s a good list of automatically mined network visualizations, mostly leveraging Internet data.  Found it while searching for do-it-yourself network visualization tools which I could use to play with my own real network relations and embed in my blog.  We’re looking at ways to track link utilization on the virtual home website – the visualization show above from Crazy Egg is certainly a neat trick (if not actually analytically useful)