Heh. LibraryThing is eating my life right now. It's strangely addictive, and it's made me realise I have A Lot Of Books. I've hardly got warmed up, and I've already had to sign up for a membership.
Intriguingly, I had a peep at the "Most Popular Authors" bit. Get this:
J.K. Rowling: 156,196
Stephen King: 107,811
Terry Pratchett: 101,686
J. R. R. Tolkien: 81,822
Neil Gaiman: 80, 364
Neil Gaiman is the fifth most popular author. This makes me very happy indeed.
As a comparison, William Shakespeare was running at 61,269.
If anyone wants me, I will be uploading my Doctor Who collection. I may be some time.