I'm not really surprised. Goodreads doesn't have nearly the same level of "real-time" interaction that other social networks do. People can only read (and the

I'm not really surprised. Goodreads doesn't have nearly the same level of "real-time" interaction that other social networks do. People can only read (and therefore review) so many books, so it's not like there are millions of users constantly posting new content/comments/etc.