A great tool to edit SVG image's source online

I just design a vector image with Inkscape and I want to do something more with the xml source. Eventhough Inkscape has a xml editor (CTRL + SHIFT + X) but It's not intuitive enough. Here we go, this online tool is pretty cool:

http://mrdoob.com/projects/htmleditor/

The editor allows me to modify SVG's XML source and see the changes instantly, visually.