I’m really liking LibraryThing, though I’ve realized that it will only load three widgets full of books at once. You have to refresh the widget to get more books, or just click the title to go to the full list.
One feature I just found this morning is that it will tell you what awards the books you’ve entered have won. This discovery coincided with my realization that the books I’ve copyedited have won even more awards than I was aware of. I will have to update my sidebar. :)
If you’re curious, check out the full awards list.