I got the Kindle last year and have over 100 books in it. It is so easy to use and so convenient when on the go and you don't want to lug about cart-loads of books (if you are the type who simply cannot survive passing a free minute without reading :)). And Amazon always has some GREAT deals, i.e. free books. So check out their Kindle Bestseller list.
http://www.amazon.com/gp/bestsellers/digital-text/

And if you don't have a Kindle, what are you waiting for? Go get one! Shipping is always free with super saver on Amazon with purchases of over $25!