Well, I've just found a software app that takes this concept to the next level. Called WebTracer2, you run the "spider" program to create a map file of your site, and then you run the "visualizer" program to see the illustration. WebTracer2 has 3 advantages over aharef:
- When you hover your mouse over a node, it displays the url of the page the node represents.
- When you click on a node, the page represented by that node is displayed in your web browser.
- You can use your arrow keys to zoom in and out and rotate the graph.
It's not perfect - it requires a lot of horsepower, and you can't make it display the url's for all of the nodes simultaneously; but it is a big jump in the right direction.