Pretty cool tools
Grafolicious: A webmaster tool to see the evolution of a del.icio.us bookmark
http://www.neuroticweb.com/recursos/del.icio.us-graphs/
Graph Tag Cloud (Greasemonkey)
http://www.terrellrussell.com/projects/cloudalicious/deliciousgraphatagcloud.user.js
I'm beginning to use del.icio.us a bit more
Wish that the list of urls for a tag would only contain distinct urls, rather than many duplicates