Mapping del.icio.us with Anthracite and OmniGraffle

Several people have asked me how I constructed the visualizations that I used in my talk on del.icio.us. My own approach involved a fair amount of hand-rolled custom code - not fun for people unaccustomed to writing their own software and working from the command line. So as to give non-programming-savvy researchers a chance to explore del.icio.us - or other online systems with implicit network structures - for themselves, I have put together a short guide on using two Mac OS X applications, Anthracite and OmniGraffle, for this purpose.

Comments and suggestions are welcome, either here or on my weblog.