Actually I was hunting the net for new visualization inspiration. Stumbled across Websites as graphs. This little web-program parses (that is analyzes) the source code of a web page. The source code contains instructions for the browser how to present the content. These instructions are generally called tags and they are something like a unified language called html (mostly every browser understands html). Back Websites as graphs displays certain elements of the source code of a given website and shows the nested structure (within a page can be a table, within that table can be a link, within that link can be an image)
micenterprise.de looks like this:
The original (flash based graph can be found here.
