Noting: Books is a great organizational website, a way to congregate notes and thoughts on a particular book, and see what other's thought all in one place.  It's like the microblog for books - if you don't like to annotate your books in pen or pencil - here's a way to keep all your notes together.  If you can't remember when you started a book or finished a book you can keep track of that as well. 

You can see what everyone else is reading (just check out the "Most Recently Added" section) to see what your missing and write down your insights before you forget them. 

There's not much too the site, it's simple, easy to navigate - it has a singular purpose and it does it very well.  Just a little blurb from the faq page: "To start your own notebook, all you need to do is register. A notebook has three primary parts: your chronological list of reading notes, your reading history (a complete list of titles and dates, organized by year, with links to your notes on each book), and a to-be-read list. The links at the top of your notebook toggle between your notes and your history, and the TBR list is accessed from the link beneath your user picture."

It's easy to register and get started, and a great way to organize your thoughts, so start your notebook today!