After playing with Website structure graph app, Peter has started a new kewl particle graph tool which displays a whole website with validation information from the w3c validation tool.
This is really great because the result is an overview of your site with overall information not only about validation but also with resource types.
I think my sebastian.dietzold.de Graph looks a little bit too red 
Mostly, this is the fault of the gallery script, which does not validate but I will not fix this because I want to switch to flickr soon.
