Goodreads - See what your friends are reading.
Img.vision - Image hosting & video hosting for eCommerce sellers
Readernaut - We are a small community of readers, sharing our adventures and supporting each other as we persue a life of learning.
BeeIMG - BeeIMG is a simple, fast, easy image sharing solution created to fill up your image sharing needs.
LibraryThing - A home for your books.
ImageVenue - ImageVenue is a great online hosting service that allows uploading pictures for showing creative works with a simple-to-use technique.