Online Library/book list

At last, I've found a good online app for tracking what books I own, have read, borrowed from the library, ordered from the library etc. My Library Thing shows the four books that I had down in the basement to test with and the great thing is that adding a book is really simple. Just swiping the barcode with the cuecat scanner and the book was looked up on amazon and ready to be entered. I just had to add the tags that I wanted to use. It would be great if it showed the tags already used ala flickr, but I suspect that won't be long in coming. The service is free for 200 books and $10 for a lifetime membership after that which sounds pretty good to me.
The widget for recent books read appears below (which I am going to have to change the styling of)