Check out these sites to connect with other book lovers.
BookCrossing.com: "Where 786,068 people in over 130 countries come to share their passion for books with the world."
Shelfari.com: "The premier social network for people who love books. Create a virtual shelf to show off your books, see what your friends are reading and discover new books."
GoodReads.com: "Get great book recommendations from people you know. Keep track of what you've read and what you'd like to read. Form a book club, answer book trivia, collect your favorite quotes."
LibraryThing.com: "Join the world’s largest book club. Catalog your books. Find people with eerily similar tastes. Find new books to read. Free Early Reviewer books from publishers and authors."
BookSprouts.com: "Making book clubs and reading groups easy, online."