Someone told me about this website called Pixel of Ink where you can get free e-books (for kindle etc) so I checked it out. I thought it sounded too good to be true but I've been using it for about a month now and it is awesome. You subscribe to a daily email here http://www.pixelofink.com/subscribe/

The daily email has a list of about 8 books usually with half being free and half being sale prices. The free books are usually only free for that one day - if you click the link the next day, quite often the book is no longer free. The links take you to amazon and the books are downloaded via wifi etc. There are all different kinds of books and a wide range of what amazon would normally charge for the books - anywhere from $0.99 - $20. According to Pixel of Ink, the reason some of these books are free for a limited time is because sometimes a publishing company "would like to shine some attention on an author...etc"

I absolutely love this since I read like crazy and it is a huge money saver.