Last February my hard disk crashed and I lost all the data I had on it. Since then I more and more keep all my data on the net. There is almost no data on my hard disk anymore. I use Plaxo for my address book I use a web mail client even though I prefer the Thunderbird user interface and I use Flickr. One of the things I lost when I lost my hard disk was a catalog of my home library that I had been creating. I never got around to starting to re-enter all the data i lost. So today when I read 12 frogs I was thrilled to discover that a web based library cataloging application has been created. I have just started to play with it but Library Thing seems VERY cool and I am very excited.