We seem to have this post like twice a week. Seems like there should be a way to make a reading blog like the recipe one!
I just discovered Shelfari. You have a virtual shelf of books you have read, are reading and plan to read. You can look at other people's and "friend" people like Facebook, write reviews etc.
I was so annoyed when I found out it was blocked at school. I thought it would be a great way to motivate kids to read! I even emailed the tech department and they said they can't allow anything that is like a social networking site. Grr.