Hacking del.icio.us - Leslie M. Orchard

This is the ultimate guide to hacking, tweaking, and modifying del.icio.us – one of the hottest topics on the web today. Tons of hacks including:
* Geotagging del.icio.us bookmarks
* Mapping del.icio.us tags with Google Maps
* Building and watching tag clouds over time
* del.icio.us tagging using browser keywords
* del.icio.us Firefox hacks
* Integrating Bloglines and del.icio.us
* Linking to posts w/ greasemonkey
* del.icio.us Safari hacks
* del.icio.us desktop hacks for Windows, Mac, and Linux
* Combining del.icio.us and blogs – Movable Type, WordPress, blosxom: and others
* Programming with the del.icio.us API


and more...