There is this site, Shelfari, which a friend of mine introduced me to. It is a social networking site that aims to bring together people with a passion of books. (Pingu, are you reading this?)
It facilitates
- creating your own cyber-bookshelf (Jay - you have your own library, right?)
- creating a network of friends
- reviewing books (Brownie, Manasi, Madura, Peej, Frida and others)
- exchanging messages with friends and others about books (Vishesh)
- and probably many more things.
Its a great site for book-lovers. I don't know if there are any other similar sites to do a comparison.
Links to some interesting pages:
Abha-Interesting set of quotes about words in her profile page.
A random page of reviews of Rohinton Mistry's - A Fine Balance.
PS: The site sometimes is quite slow and probably has a few bugs.