This is a simple force-directed graph that maps the relationships between myspace users. You can start by typping any myspace user URL (eg. www.myspace.com/user) and see all the connections build automatically. As more friends are discovered, they are added to the map in real time. It settles down to a stable state gradually. A maximum of 75 friends pages are shown.
Using Java and GraphViz, the map allows zooming in and out, panning and dragging the nodes (users) around. You can also click on any node to open the relevant myspace page.
The author has also built Website Mapper 2, another dynamic map based on the same concept, but in this case, it creates a clickable map of all the pages of any website URL.