I've chosen a tool to try out as my books and reading tracker for 2009. I was looking for a way to track my reading for the year; different from the WordPress blog I tried in 2008.
I did some poking around and looked into several different book-lover sites. I also considered creating a Google Docs spreadsheet to track my books. But when I took a look at goodreads, set up to "improve the process of reading and learning throughout the world," I decided to give it a shot.
It looks like it will allow me to maintain a list of books organized into "shelves." I'm starting with to-read, currently-reading, read, library-book, and owned. I may add more later. It comes with lots of metadata about books built-in and is set up as a social site, encouraging reviews and recommendations among users.
I've added a goodreads widget to the left-hand side-bar. It tracks books as I finish them. We'll see how it works out.