I have started to use the service by LibraryThing to keep track of my book lists. It is free and a really nice service but I was afraid of something happening to my data so I quickly hacked up a script to grab a backup of my entire library. This script will grab the frame that holds all of the main data of my library (in printable view). It also outputs to a file based off the current date so if you run it in a cronjob it will not overwrite the old backup (something I learned from my delicous backups). Enjoy and share!

#!/bin/bash
# Backup Library thing to a text file
curl "http://www.librarything.com//catalog_bottom.php?printable=1&view=edavis10&shelf=printable" \ 
-o "/home/eric/doc/L/Library Thing/backup`date +%Y-%m-%d`.html"

Eric Davis