Check out this tree applet that renders website maps as trees. I’m not entirely sure how much use it is, but it’s fascinating watching it spider all the links in a site as it constructs the tree. I made the mistake of typing in WipeoutZone to see what would happen, and it took an age as it spidered every record page entry and forum post. This place, looks a lot simpler – more of a cheese plant than a bona fide tree to start with, then it hits all the external links and kaboom – it’s a forest.