Google - Book search

I stumbled upon Google Book search by mistake a couple of hours ago and I've been glued to it since.

In a nutshell:
"Search the full text of books to find ones that interest you. Clicking on a book result, you'll be able to see everything from a few short excerpts to the entire book, depending on a few different factors. Each book includes an 'About this book' page with basic bibliographic data like title, author, publication date, length and subject. For every book, you'll see links directing you to bookstores where you can buy the book and libraries where you can borrow it. If we've determined that a book is out of copyright, or the publisher or rightsholder has given us permission, you'll be able to page through the entire book from start to finish, as many times as you like."

*sigh* ... It's brilliant.
Overdose on literature here.