Social networking site revolving around books. Allows you to track which books you have read and which books you would like to read. Provides virtual bookshelves. Excellent way to maintain a "to-read list" which can then be printed before you head off to the library

Micro-updates from Joel

Excellent online note taking repository. Allows the storage of text images and html. Runs OCR on all uploaded images and provides search for both text and the text within the images. Native mac/windows/iPhone clients. Limited by monthly bandwidth which is exceptionally generous