Amazon says there are now over 100,000 books to borrow for free on the Kindle tablet. As long as you have a current Prime membership, you can download one book a month including New York Times best sellers, with no due dates or expiration times. Since launching in November 2011, the Kindle Owners’ Lending Library has added over 90,000 titles. Amazon boasts over 1 million books have been borrowed since then. Gosh, along with free streaming movies, that $79 Amazon Prime membership is looking better every day.