Goodreads

Surfing the net today I discovered a website where you can share your book knowledge with other people, to make lists of books you've read or you want to read in the near or far future.
I found it quite interesting, and I already copied the widget on my blog.
So now you know what I read at the moment and which books I consider worth reading ;)
The site is http://www.goodreads.com/
Enjoy!