New graph tool

I have had a few cycles on planes etc to update the blog mapping tool Blog Map. It is now more interactive - youy can crawl links that have linking to RSS or RDF feeds. The nodes are color coded for the type of RSS feed that each node has. I still need to add a help button and a bunch of other features to get anywhere near useful. It will update the xml representation as you crawl new nodes. The xml file is as Map Data

As always comments welcome.