Libraries are increasingly offering patrons the opportunity to check out ebook and audio versions of current books. And later this year that opportunity will expand with Amazon's new Kindle LIbrary Lending. Some 11,000 U.S. libraries, in partnership with OverDrive, a media distributor, will make ebooks available to local patrons. You'll be able to check out a book electronically and begin reading it immediately on Amazon's free Kindle app. Read more on Macworld.