My actual blog blog is at http://aeracode.org, so don't go thiking this journal is the sole pillar of my journalistic intellect. It's for last.fm-related things only!
After being inspired by Lee Byron's work, I've come up with my own (somewhat interesting) last.fm graph generator.
You can find it at lastgraph.aeracode.org, and read more about it in the relevant blog post. All and any comments are welcome, although note that only one rendering node (my laptop) is on at the moment.